The Democratic Senatorial Campaign Committee (DSCC) is the
Democratic Hill committee for the
United States Senate
The United States Senate is a chamber of the Bicameralism, bicameral United States Congress; it is the upper house, with the United States House of Representatives, U.S. House of Representatives being the lower house. Together, the Senate and ...
. Its purpose is to elect
Democrats to the United States Senate. The DSCC's current Chair is Senator
Kirsten Gillibrand
Kirsten Elizabeth Gillibrand (; ; born December 9, 1966) is an American lawyer and politician serving as the Seniority in the United States Senate, junior United States Senate, United States senator from New York (state), New York since 2009 ...
of
New York who succeeded
Gary Peters of
Michigan
Michigan ( ) is a peninsular U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest, Upper Midwestern United States. It shares water and land boundaries with Minnesota to the northwest, Wisconsin to the west, ...
after the
2024 Senate elections. DSCC's current executive director is Devan Barber.
List of chairs and vice chairs
Chairs
Vice chairs
Recent history
2001–2002 election cycle
Patty Murray became the first female Chair of the DSCC in 2001. Her team raised more than $143 million, beating the previous record by $40 million. However, the Democratic Party lost two seats in the
subsequent election which saw President
George W. Bush
George Walker Bush (born July 6, 1946) is an American politician and businessman who was the 43rd president of the United States from 2001 to 2009. A member of the Bush family and the Republican Party (United States), Republican Party, he i ...
become the first sitting president to take control of the Senate in a midterm election since 1914. This result may be attributed to
George W. Bush
George Walker Bush (born July 6, 1946) is an American politician and businessman who was the 43rd president of the United States from 2001 to 2009. A member of the Bush family and the Republican Party (United States), Republican Party, he i ...
's post-
9/11 popularity and the death of Senator
Paul Wellstone of
Minnesota
Minnesota ( ) is a U.S. state, state in the Upper Midwestern region of the United States. It is bordered by the Canadian provinces of Manitoba and Ontario to the north and east and by the U.S. states of Wisconsin to the east, Iowa to the so ...
, who had been favored to win.
2005–2006 election cycle
Chuck Schumer
Charles Ellis Schumer ( ; born November 23, 1950) is an American politician serving as the Seniority in the United States Senate, senior United States Senate, United States senator from New York (state), New York, a seat he has held since 1999. ...
chaired the DSCC one of two consecutive cycles. Prior to the
2006 election, the Republican Party controlled 55 of 100 Senate seats. The Democratic Party performed well in the 2006 elections. No Congressional or gubernatorial seat held by a Democrat was won by a Republican. Six Republican incumbents were defeated by Democrats:
*
Jim Talent (of
Missouri
Missouri (''see #Etymology and pronunciation, pronunciation'') is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it border ...
) lost to
Claire McCaskill
*
Conrad Burns (of
Montana
Montana ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Idaho to the west, North Dakota to the east, South Dakota to the southeast, Wyoming to the south, an ...
) lost to
Jon Tester
*
Mike DeWine (of
Ohio
Ohio ( ) is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Lake Erie to the north, Pennsylvania to the east, West Virginia to the southeast, Kentucky to the southwest, Indiana to the ...
) lost to
Sherrod Brown
*
Rick Santorum (of
Pennsylvania
Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...
) lost to
Bob Casey Jr.
*
Lincoln Chafee (of
Rhode Island
Rhode Island ( ) is a state in the New England region of the Northeastern United States. It borders Connecticut to its west; Massachusetts to its north and east; and the Atlantic Ocean to its south via Rhode Island Sound and Block Is ...
) lost to
Sheldon Whitehouse
Sheldon Whitehouse (born October 20, 1955) is an American lawyer and politician serving since 2007 as the junior United States senator from Rhode Island. A member of the Democratic Party, he served from 1993 to 1998 as the United States Att ...
*
George Allen (of
Virginia
Virginia, officially the Commonwealth of Virginia, is a U.S. state, state in the Southeastern United States, Southeastern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States between the East Coast of the United States ...
) lost to
Jim Webb
James Henry Webb Jr. (born February 9, 1946) is an American politician and author. He has served as a United States senator from Virginia, Secretary of the Navy, Assistant Secretary of Defense for Reserve Affairs, Counsel for the United States ...
.
Incumbent Democrat
Joe Lieberman
Joseph Isadore Lieberman (; February 24, 1942 – March 27, 2024) was an American politician and lawyer who served as a United States senator from Connecticut from 1989 to 2013. Originally a member of the Democratic Party (United States), Dem ...
(of
Connecticut
Connecticut ( ) is a U.S. state, state in the New England region of the Northeastern United States. It borders Rhode Island to the east, Massachusetts to the north, New York (state), New York to the west, and Long Island Sound to the south. ...
) lost the Democratic primary, but won reelection as an independent candidate. Democrats kept their two open seats in
Minnesota
Minnesota ( ) is a U.S. state, state in the Upper Midwestern region of the United States. It is bordered by the Canadian provinces of Manitoba and Ontario to the north and east and by the U.S. states of Wisconsin to the east, Iowa to the so ...
and
Maryland
Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east ...
, and Republicans held onto their lone open seat in
Tennessee
Tennessee (, ), officially the State of Tennessee, is a landlocked U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders Kentucky to the north, Virginia to the northeast, North Carolina t ...
. In
Vermont
Vermont () is a U.S. state, state in the New England region of the Northeastern United States. It borders Massachusetts to the south, New Hampshire to the east, New York (state), New York to the west, and the Provinces and territories of Ca ...
,
Bernie Sanders
Bernard Sanders (born September8, 1941) is an American politician and activist who is the Seniority in the United States Senate, senior United States Senate, United States senator from the state of Vermont. He is the longest-serving independ ...
, an independent was elected to the seat left open by retiring Independent
Jim Jeffords.
For the first time since 1954, neither major party held a majority of seats. However, the partisan balance for the Senate stood at 51–49 in favor of the Democrats, as Independent senators Bernie Sanders and Joe Lieberman caucused with them.
2007–2008 election cycle
Chuck Schumer
Charles Ellis Schumer ( ; born November 23, 1950) is an American politician serving as the Seniority in the United States Senate, senior United States Senate, United States senator from New York (state), New York, a seat he has held since 1999. ...
chaired the DSCC for the second of two consecutive cycles. Heading into the
2008 election, the Senate consisted of 49 Democrats, 49 Republicans, and two independents (
Bernie Sanders
Bernard Sanders (born September8, 1941) is an American politician and activist who is the Seniority in the United States Senate, senior United States Senate, United States senator from the state of Vermont. He is the longest-serving independ ...
of Vermont and
Joe Lieberman
Joseph Isadore Lieberman (; February 24, 1942 – March 27, 2024) was an American politician and lawyer who served as a United States senator from Connecticut from 1989 to 2013. Originally a member of the Democratic Party (United States), Dem ...
of Connecticut) who caucused with the Democrats, giving the Democratic caucus a de facto 51–49 majority. Of the seats up for election in 2008, 23 were held by Republicans and 12 by Democrats. The Republicans, who openly conceded early on that they wouldn't be able to recover the majority in 2008, lost eight seats. This election was the second successive cycle in which no seats switched from Democratic to Republican. In addition, this was the largest Democratic Senate gain since 1986, when they also won eight seats.
Democrats defeated five Republican incumbents:
*
Ted Stevens
Theodore Fulton Stevens Sr. (November 18, 1923 – August 9, 2010) was an American politician and lawyer who served as a United States Senate, U.S. Senator from Alaska from 1968 to 2009.
He was the longest-serving Republican Party (United St ...
(of
Alaska
Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ...
) lost to
Mark Begich
*
Norm Coleman (of
Minnesota
Minnesota ( ) is a U.S. state, state in the Upper Midwestern region of the United States. It is bordered by the Canadian provinces of Manitoba and Ontario to the north and east and by the U.S. states of Wisconsin to the east, Iowa to the so ...
) lost to
Al Franken
*
John Sununu (of
New Hampshire
New Hampshire ( ) is a U.S. state, state in the New England region of the Northeastern United States. It borders Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec t ...
) lost to
Jeanne Shaheen
Cynthia Jeanne Shaheen ( ; née Bowers, born January 28, 1947) is an American politician and former educator serving since 2009 as the Seniority in the United States Senate, senior United States Senate, United States senator from New Hampshire. A ...
*
Elizabeth Dole (of
North Carolina
North Carolina ( ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, South Carolina to the south, Georgia (U.S. stat ...
) lost to
Kay Hagan
*
Gordon Smith (of
Oregon
Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...
) lost to
Jeff Merkley
Democrats also picked up open seats in
Colorado
Colorado is a U.S. state, state in the Western United States. It is one of the Mountain states, sharing the Four Corners region with Arizona, New Mexico, and Utah. It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas ...
,
New Mexico
New Mexico is a state in the Southwestern United States, Southwestern region of the United States. It is one of the Mountain States of the southern Rocky Mountains, sharing the Four Corners region with Utah, Colorado, and Arizona. It also ...
, and
Virginia
Virginia, officially the Commonwealth of Virginia, is a U.S. state, state in the Southeastern United States, Southeastern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States between the East Coast of the United States ...
.
When the new Senate was first sworn in, the balance was 58–41 in favor of the Democrats, because of the unresolved Senate election in Minnesota. The defection of Republican
Arlen Specter
Arlen Specter (February 12, 1930 – October 14, 2012) was an American lawyer, author and politician who served as a United States Senator from Pennsylvania from 1981 to 2011. Specter was a Democrat from 1951 to 1965, then a Republican fr ...
of
Pennsylvania
Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...
in April 2009 and the swearing-in of Al Franken in July 2009 brought the balance to 60–40.
2011–2012 election cycle
In
2012
2012 was designated as:
*International Year of Cooperatives
*International Year of Sustainable Energy for All
Events January
*January 4 – The Cicada 3301 internet hunt begins.
* January 12 – Peaceful protests begin in the R ...
, 23 Democratic Senate seats were available, as opposed to 10 Republican seats. An increase of four seats would have given the GOP a Senate majority. In the election, three GOP seats were won and one Democratic seat was lost, increasing the Democratic majority by two.
DSCC executive director said their strategy was to "localize" elections – make them "a choice between the two people on the ballot
..and not simply allow it to be a nationalized election".
Because this is not easy to do in a presidential election year, the DSCC had gone very much on the offensive, depicting Republican candidates and donors, and especially the
Tea Party, as extreme. During the Florida and Indiana primaries, they pushed that the Tea Party was working to move the GOP "so far to the right that candidates will say anything to get their party's nomination". The GOP targeted four red states to pick up the seats they need for a Senate majority. They were looking at states that did not vote for President Obama in 2008: Missouri, Montana, Nebraska and North Dakota. They lost three of those four seats.
2013–2014 election cycle
In
2014
The year 2014 was marked by the surge of the Western African Ebola epidemic, West African Ebola epidemic, which began in 2013, becoming the List of Ebola outbreaks, most widespread outbreak of the Ebola, Ebola virus in human history, resul ...
, 21 Democrats were up for election. In order to have a majority, the Republicans were required to attain at least 51 seats in the Senate. The Democrats would have been able to retain a majority with 48 seats (assuming the two Independents continued to caucus with them) because, in event of a tie vote, Vice President
Joe Biden
Joseph Robinette Biden Jr. (born November 20, 1942) is an American politician who was the 46th president of the United States from 2021 to 2025. A member of the Democratic Party (United States), Democratic Party, he served as the 47th vice p ...
becomes the tie-breaker. Many of the incumbents were elected in the Democratic wave year of 2008 along with President Obama's first election.
Although Democrats saw some opportunities for pickups, the combination of Democratic retirements and numerous Democratic seats up for election in swing states and red states gave Republicans hopes of taking control of the Senate. 7 of the 21 states with Democratic seats up for election in 2014 had voted for Republican Mitt Romney in the 2012 presidential election. Democrats also faced the lower voter turnout that accompanies mid-term elections.
By midnight ET, most major networks projected that the Republicans would take control of the Senate. The party held all three competitive Republican-held seats (
Kentucky
Kentucky (, ), officially the Commonwealth of Kentucky, is a landlocked U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders Illinois, Indiana, and Ohio to the north, West Virginia to the ...
,
Kansas
Kansas ( ) is a landlocked U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Nebraska to the north; Missouri to the east; Oklahoma to the south; and Colorado to the west. Kansas is named a ...
, and
Georgia
Georgia most commonly refers to:
* Georgia (country), a country in the South Caucasus
* Georgia (U.S. state), a state in the southeastern United States
Georgia may also refer to:
People and fictional characters
* Georgia (name), a list of pe ...
), and defeated incumbent Democrats in North Carolina, Colorado, and Arkansas. Combined with the pick-ups of open seats in
Iowa
Iowa ( ) is a U.S. state, state in the upper Midwestern United States, Midwestern region of the United States. It borders the Mississippi River to the east and the Missouri River and Big Sioux River to the west; Wisconsin to the northeast, Ill ...
,
Montana
Montana ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Idaho to the west, North Dakota to the east, South Dakota to the southeast, Wyoming to the south, an ...
,
South Dakota
South Dakota (; Sioux language, Sioux: , ) is a U.S. state, state in the West North Central states, North Central region of the United States. It is also part of the Great Plains. South Dakota is named after the Dakota people, Dakota Sioux ...
, and
West Virginia
West Virginia is a mountainous U.S. state, state in the Southern United States, Southern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States.The United States Census Bureau, Census Bureau and the Association of American ...
, the Republicans made a net gain of 7 seats before the end of the night. In the process of taking control of the Senate, Republicans defeated three incumbent Democrats, a task the party had not accomplished since the 1980 election. Five of the seven confirmed pickups were in states that voted for Mitt Romney in 2012, but two of the seats that Republicans won represent states that voted for Barack Obama in 2012 (Colorado and Iowa). Of the three races that were not called by the end of election night,
Alaska
Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ...
and
Virginia
Virginia, officially the Commonwealth of Virginia, is a U.S. state, state in the Southeastern United States, Southeastern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States between the East Coast of the United States ...
were still too close to call, while
Louisiana
Louisiana ( ; ; ) is a state in the Deep South and South Central regions of the United States. It borders Texas to the west, Arkansas to the north, and Mississippi to the east. Of the 50 U.S. states, it ranks 31st in area and 25 ...
held a December 6 run-off election. Incumbent Virginia Democrat
Mark Warner was declared the winner of his race by a narrow margin over Republican
Ed Gillespie on November 7, and Alaska Republican
Dan Sullivan was declared the winner against Democratic incumbent
Mark Begich a week later, on November 12. Republican
Bill Cassidy
William Morgan Cassidy (born September 28, 1957) is an American physician and politician serving as the Seniority in the United States Senate, senior United States senator from Louisiana, a seat he has held since 2015. A member of the Republic ...
defeated incumbent Democrat
Mary Landrieu in the Louisiana runoff on December 6.
Days after the election, the United States Election Project estimated that 36.6% of eligible voters voted, 4% lower than the 2010 elections, and possibly the lowest turnout rate since the 1942 election.
2015–2016 election cycle
In
2016
2016 was designated as:
* International Year of Pulses by the sixty-eighth session of the United Nations General Assembly.
* International Year of Global Understanding (IYGU) by the International Council for Science (ICSU), the Internationa ...
, 10 Democratic and 23 Republicans seats were up for reelection. In order to have gained a majority, the Democrats would have needed to attain at least 51 seats or 50 seats (and hold the presidency) in the Senate. If they had won the presidency, the Democrats would have been able to gain a majority with 48 seats (assuming the two Independents continued to caucus with them) because, in event of a tie vote, the Vice President becomes the tie-breaker. Many of the incumbents were elected in the Republican wave year of 2010 midterm. The Democrats needed to gain 4 seats as the Republicans held the majority 54–46, with both independent candidates caucusing with the Democrats. Two-term Senator
Jon Tester of Montana chaired the DSCC for this cycle.
There were five seats that the Democrats needed to defend this cycle:
Michael Bennet
Michael Farrand Bennet (born November 28, 1964) is an American attorney, businessman, and politician serving as the Seniority in the United States Senate, senior United States Senate, United States senator from Colorado, a seat he has held sinc ...
of
Colorado
Colorado is a U.S. state, state in the Western United States. It is one of the Mountain states, sharing the Four Corners region with Arizona, New Mexico, and Utah. It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas ...
,
Patty Murray of
Washington, and the seats of retiring Senators
Harry Reid of
Nevada
Nevada ( ; ) is a landlocked state in the Western United States. It borders Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the seventh-most extensive, th ...
,
Barbara Boxer
Barbara Sue Boxer (née Levy; born November 11, 1940) is a retired American politician, lobbyist, and former reporter who served in the United States Senate, representing California from 1993 to 2017. A member of the Democratic Party (United St ...
of
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
, and
Barbara Mikulski of
Maryland
Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east ...
. Seven of the Republican seats that were up for reelection were in states that Obama won twice,
Mark Kirk of
Illinois
Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders on Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash River, Wabash and Ohio River, Ohio rivers to its ...
,
Pat Toomey of
Pennsylvania
Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...
,
Ron Johnson of
Wisconsin
Wisconsin ( ) is a U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest of the United States. It borders Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michig ...
,
Kelly Ayotte of
New Hampshire
New Hampshire ( ) is a U.S. state, state in the New England region of the Northeastern United States. It borders Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec t ...
,
Chuck Grassley
Charles Ernest Grassley (born September 17, 1933) is an American politician serving as the president pro tempore of the United States Senate since 2025, a role he also held from 2019 to 2021. A member of the Republican Party (United States), Re ...
of
Iowa
Iowa ( ) is a U.S. state, state in the upper Midwestern United States, Midwestern region of the United States. It borders the Mississippi River to the east and the Missouri River and Big Sioux River to the west; Wisconsin to the northeast, Ill ...
,
Rob Portman of
Ohio
Ohio ( ) is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Lake Erie to the north, Pennsylvania to the east, West Virginia to the southeast, Kentucky to the southwest, Indiana to the ...
and
Marco Rubio of
Florida
Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...
who ran for reelection after an unsuccessful presidential bid. In all but one of those seats, Iowa, the Republican incumbents were fighting to be reelected for the first time. Democrats were also targeting the open seat in Indiana which was vacated by retiring Republican
Dan Coats. There were several other states the Democrats were focused on where the Republican incumbents may have been vulnerable:
John McCain
John Sidney McCain III (August 29, 1936 – August 25, 2018) was an American statesman and United States Navy, naval officer who represented the Arizona, state of Arizona in United States Congress, Congress for over 35 years, first as ...
of
Arizona
Arizona is a U.S. state, state in the Southwestern United States, Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah. It also borders Nevada to the nort ...
,
Lisa Murkowski
Lisa Ann Murkowski ( ; born May 22, 1957) is an American attorney and politician serving as the Seniority in the United States Senate, senior United States senator from the state of Alaska, having held the seat since 2002. She is the first woman ...
of
Alaska
Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ...
,
John Boozman of
Arkansas
Arkansas ( ) is a landlocked state in the West South Central region of the Southern United States. It borders Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, Texas to the southwest, and Oklahoma ...
,
Richard Burr of
North Carolina
North Carolina ( ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, South Carolina to the south, Georgia (U.S. stat ...
,
Johnny Isakson of
Georgia
Georgia most commonly refers to:
* Georgia (country), a country in the South Caucasus
* Georgia (U.S. state), a state in the southeastern United States
Georgia may also refer to:
People and fictional characters
* Georgia (name), a list of pe ...
,
Roy Blunt of
Missouri
Missouri (''see #Etymology and pronunciation, pronunciation'') is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it border ...
,
Rand Paul
Randal Howard Paul (born January 7, 1963) is an American politician serving as the Seniority in the United States Senate, junior United States senator from Kentucky since 2011.
A member of the Republican Party (United States), Republican ...
of
Kentucky
Kentucky (, ), officially the Commonwealth of Kentucky, is a landlocked U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders Illinois, Indiana, and Ohio to the north, West Virginia to the ...
who simultaneously ran for president, and Senator
David Vitter of
Louisiana
Louisiana ( ; ; ) is a state in the Deep South and South Central regions of the United States. It borders Texas to the west, Arkansas to the north, and Mississippi to the east. Of the 50 U.S. states, it ranks 31st in area and 25 ...
.
After the election, Democrats gained two seats.
Tammy Duckworth
Ladda Tammy Duckworth (born March 12, 1968) is an American politician and retired Army National Guard Lieutenant colonel (United States), lieutenant colonel serving since 2017 as the Seniority in the United States Senate, junior United States ...
of
Illinois
Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders on Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash River, Wabash and Ohio River, Ohio rivers to its ...
and
Maggie Hassan of
New Hampshire
New Hampshire ( ) is a U.S. state, state in the New England region of the Northeastern United States. It borders Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec t ...
joined the caucus. They also successfully defended their only seat in contention,
Nevada
Nevada ( ; ) is a landlocked state in the Western United States. It borders Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the seventh-most extensive, th ...
where
Catherine Cortez Masto became the first Latina U.S. Senator. This was the first time since 1992 that the Democrats gained seats in this Senate Class. For the first time the DSCC did not endorse a candidate in the general election in
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
because both women were Democrats competing for the seat of retiring Senator
Barbara Boxer
Barbara Sue Boxer (née Levy; born November 11, 1940) is a retired American politician, lobbyist, and former reporter who served in the United States Senate, representing California from 1993 to 2017. A member of the Democratic Party (United St ...
.
Kamala Harris
Kamala Devi Harris ( ; born October 20, 1964) is an American politician and attorney who served as the 49th vice president of the United States from 2021 to 2025 under President Joe Biden. She is the first female, first African American, and ...
beat
Loretta Sanchez for the seat.
2017–2018 election cycle
First-term Senator
Chris Van Hollen of
Maryland
Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east ...
chaired the DSCC for the 2017–2018 election cycle. Before the
2018 elections, Democrats held 49 seats in the U.S. Senate while Republicans held 51. The unusually imbalanced 2018 Senate map, created by successful 2006 and 2012 elections, resulted in a large number of vulnerable Democrats.
Joe Donnelly of Indiana,
Claire McCaskill of Missouri,
Joe Manchin of West Virginia,
Heidi Heitkamp of North Dakota,
Jon Tester of Montana and
Bill Nelson of Florida were seen as the most vulnerable. On November 6, incumbent Democrats in four states were unseated; Donnelly was unseated by State Rep.
Mike Braun, McCaskill was defeated by
Missouri Attorney General
The Office of the Missouri Attorney General was created in 1806 when Missouri was part of the Louisiana Territory. Missouri's first Constitution in 1820 provided for an appointed attorney general, but since the 1865 Constitution, the Attorney Ge ...
Josh Hawley
Joshua David Hawley (born December 31, 1979) is an American politician and attorney serving as the Seniority in the United States Senate, senior United States Senate, United States senator from Missouri, a seat he has held since 2019. A member ...
, Heitkamp was defeated by
Kevin Cramer, representative for North Dakota's at-large congressional district, and Nelson was defeated by then
Governor
A governor is an politician, administrative leader and head of a polity or Region#Political regions, political region, in some cases, such as governor-general, governors-general, as the head of a state's official representative. Depending on the ...
Rick Scott
Richard Lynn Scott ( Myers; born December 1, 1952) is an American attorney, businessman, politician, and United States Navy, Navy veteran serving as the Seniority in the United States Senate, senior United States senator from the state of F ...
. The DSCC considered open seats in
Arizona
Arizona is a U.S. state, state in the Southwestern United States, Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah. It also borders Nevada to the nort ...
and
Tennessee
Tennessee (, ), officially the State of Tennessee, is a landlocked U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders Kentucky to the north, Virginia to the northeast, North Carolina t ...
,
Dean Heller's seat in Nevada and potentially
Ted Cruz
Rafael Edward Cruz (; born December 22, 1970) is an American politician and attorney serving as the junior United States senator from Texas since 2013. A member of the Republican Party, Cruz was the solicitor general of Texas from 2003 ...
's seat in Texas and
Cindy Hyde-Smith's seat in Mississippi as possible targets. Of those potentially vulnerable seats, Democrats picked up the open seat in Arizona vacated by
Jeff Flake
Jeffry Lane Flake (born December 31, 1962) is an American politician and diplomat who served as a United States senator from Arizona from 2013 to 2019. A member of the Republican Party, he previously served in the United States House of Repr ...
, with Rep.
Kyrsten Sinema defeated Rep.
Martha McSally, as well as the seat in Nevada held by Dean Heller, being defeated by Rep.
Jacky Rosen
Jacklyn Sheryl Rosen (née Spektor; born August 2, 1957) is an American politician serving as the Seniority in the United States Senate, junior United States Senate, United States senator from Nevada since 2019. A member of the Democratic Party ...
, leaving the Senate's balance at 53–47, with Republicans in control.
2019–2021 election cycle
First-term Senator
Catherine Cortez Masto of Nevada chaired the DSCC for the
2019–2020 election cycle, the first Latina to do so. Before the 2020 elections, Democrats held 47 seats, while Republicans held 53. In order to have gained a majority, Democrats would have needed to win at least 4 seats, or 3 seats and the presidency. If they won the presidency, Democrats would have been able to gain a majority with 48 seats (assuming the two Independents continued to caucus with them) because, in event of a tie vote, the Vice President becomes the tie-breaker.
Democrats needed to defend 12 seats this cycle, with only 2 in states Donald Trump won, Alabama and Michigan. In Alabama, Senator
Doug Jones had only managed to win due to an extremely flawed candidate in (
Roy Moore), and was expected to lose due to the strong Republican lean there, which he did. In Michigan, Senator
Gary Peters faced a very strong Republican candidate, businessman
John James, but was nevertheless expected to win.
Republicans, on the other hand, needed to defend 21 seats, along with 2 seats up for special elections. Only 2 seats were in states that Democrats won in 2016, Maine and Colorado. Colorado was seen as the most likely flip for the Democrats, due to incumbent Senator
Cory Gardner tying himself heavily to Trump in a state he had lost by 4.5 points in 2016, and expected to lose by a much larger margin this cycle. Popular former Governor
John Hickenlooper
John Wright Hickenlooper Jr. ( ; born February 7, 1952) is an American politician, geologist, and businessman serving as the Seniority in the United States Senate, junior United States Senate, United States senator from Colorado since 2021. A mem ...
was the Democratic nominee. In Maine, popular incumbent
Susan Collins
Susan Margaret Collins (born December 7, 1952) is an American politician serving as the senior United States senator from Maine. A member of the Republican Party, she has held her seat since 1997 and is Maine's longest-serving member of ...
had won by a landslide in 2014, but was seen as weakened by her vote to confirm Supreme Court Justice
Brett Kavanaugh and her vote to acquit Trump during his first impeachment trial. This was seen as the third most likely flip for the Democrats, after Arizona.
Republicans needed to defend seats in key swing states such as Arizona, Georgia, North Carolina, and Iowa. Seats in South Carolina, Kansas, Montana, and Alaska became surprisingly competitive, compared to their usual Republican lean. Arizona was seen as the second most likely flip for the Democrats, as it was a key swing state, along with the incumbent Senator
Martha McSally losing to
Kyrsten Sinema for the other senate seat two years earlier, and a strong challenger, former astronaut
Mark Kelly
Mark Edward Kelly (born February 21, 1964) is an American politician, retired astronaut, and former United States Navy, naval officer serving as the Seniority in the United States Senate, senior United States senator from Arizona, a seat he ha ...
. North Carolina was seen as a highly likely flip, until the Democratic nominee,
Cal Cunningham, got involved in a sex scandal that significantly hurt his candidacy. Democrats failed to flip seats in North Carolina, possibly due to the scandal, Iowa, due to Trump's over performance there, Maine, due to an underestimation of Collins' popularity and continued ticket splitting, and the seats that had unexpectedly appeared competitive maintaining their partisan lean.
Democrats initially only flipped the seats in Arizona and Colorado, leaving the balance of power at 52–48. However, Democrats also defeated
Donald Trump
Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who is the 47th president of the United States. A member of the Republican Party (United States), Republican Party, he served as the 45 ...
, meaning there would be a Democratic vice president, and the two seats in Georgia went to runoffs because no candidate received a majority of the vote in either election. The
runoffs were held on January 5, 2021. Democrats flipped both seats, allowing them to take control of the Senate, since Vice President
Kamala Harris
Kamala Devi Harris ( ; born October 20, 1964) is an American politician and attorney who served as the 49th vice president of the United States from 2021 to 2025 under President Joe Biden. She is the first female, first African American, and ...
would cast the tie-breaking vote.
2021–2022 election cycle
After the 2020–2021 cycle, Democrats governed with a bare 50–50 majority in the United States Senate. Senator
Gary Peters, who had won re-election in 2020, chaired the DSCC for the
2021–2022 cycle. Going into the cycle, Democrats had 14 seats up for election while Republicans had 21. In order to maintain their majority in the Senate, Democrats had to defend
Catherine Cortez Masto in Nevada,
Raphael Warnock
Raphael Gamaliel Warnock ( ; born July 23, 1969) is an American politician and Baptists, Baptist pastor serving as the Seniority in the United States Senate, junior United States Senate, United States senator from Georgia (U.S. state), Georgia, ...
in Georgia,
Mark Kelly
Mark Edward Kelly (born February 21, 1964) is an American politician, retired astronaut, and former United States Navy, naval officer serving as the Seniority in the United States Senate, senior United States senator from Arizona, a seat he ha ...
in Arizona, and
Maggie Hassan in New Hampshire, all of which represented states that incumbent President Biden had won in 2020. Republicans had also targeted senators in traditionally Democratic states such as
Michael Bennet
Michael Farrand Bennet (born November 28, 1964) is an American attorney, businessman, and politician serving as the Seniority in the United States Senate, senior United States Senate, United States senator from Colorado, a seat he has held sinc ...
of Colorado and
Patty Murray of Washington, while Democrats attempted to pick up open seats in Pennsylvania, North Carolina, and Ohio. Pennsylvania was seen as the most likely flip for the Democrats, while Nevada was seen as the most likely flip for the Republicans.
Democrats had overperformed in the 2022 elections overall, with incumbents Maggie Hassan and Mark Kelly winning by larger margins than anticipated, and Democratic challenger
Mandela Barnes losing to Wisconsin senator
Ron Johnson by a much smaller margin than expected. Democrats flipped the open seat in Pennsylvania, electing Democrat
John Fetterman over Republican
Mehmet Oz to replace Republican
Pat Toomey. Upon Catherine Cortez Masto's narrow victory over
Adam Laxalt in Nevada, it was projected that Democrats would retain 50 senators and thus maintain control of the U.S. Senate.
A runoff election between incumbent Democrat Raphael Warnock and Republican challenger
Herschel Walker ultimately ended in Warnock prevailing, leaving Democrats with a 51–49 majority after the elections.
2023–2024 election cycle
Senator
Gary Peters of Michigan was selected as DSCC chair for a second consecutive cycle, the first since Chuck Schumer to be so. The Class 1 cycle of Democratic senators continue to dwindle, with
Joe Manchin of West Virginia and
Jon Tester of Montana being the last of the 2012 vulnerable class, and with it adding
Sherrod Brown of Ohio as another Senator from a now-Republican-tilted state. With Manchin retiring, the West Virginia seat was written off, putting focus on
Jacky Rosen
Jacklyn Sheryl Rosen (née Spektor; born August 2, 1957) is an American politician serving as the Seniority in the United States Senate, junior United States Senate, United States senator from Nevada since 2019. A member of the Democratic Party ...
in Nevada,
Bob Casey Jr. in Pennsylvania,
Tammy Baldwin
Tammy Suzanne Green Baldwin (born February 11, 1962) is an American politician and lawyer serving since 2013 as the Seniority in the United States Senate, junior United States senator from Wisconsin. A member of the Democratic Party (United Stat ...
in Wisconsin, newcomers
Ruben Gallego in Arizona and
Elissa Slotkin in Michigan; all these were hotly contested swing states in 2020. The entry of
Larry Hogan into Maryland's race was an unexpected turn that is expected to siphon funds from tougher fights. On the offensive, Democrats are aiming at single-point senators Ted Cruz in Texas and Rick Scott in Florida; however, Texas has been an unachieved dream for multiple cycles, while Florida has consistently been tilting Republican throughout Scott's tenure.
Facing a stronger red tide than in of 2022, all Senate candidates overperformed the losing Democratic candidate Harris in terms of margin, though not necessarily in voter count; Trump swept all noted swing states in the
concurrent presidential election. Tester's 12-point and Brown's 5-point edge were not enough to win in their deep-red states, with Florida and Texas's rightward shift clearly putting Democratic Senate hopes away. Casey lost to Republican
David McCormick in an
electoral upset. Other Democratic swing state candidates won by narrow margins.
Republicans ultimately flipped four Senate seats from the Democratic caucus, winning a 53–47 majority in the chamber.
See also
*
Democratic Congressional Campaign Committee
*
National Republican Senatorial Committee
References
External links
*
{{Authority control
Senatorial Campaign Committee
Factions in the Democratic Party (United States)
Hill committees
United States Senate