President pro tempore of the United States Senate
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The president pro tempore of the United States Senate (often shortened to president pro tem) is the second-highest-ranking official of 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 ...
, after the
vice president A vice president or vice-president, also director in British English, is an officer in government or business who is below the president (chief executive officer) in rank. It can also refer to executive vice presidents, signifying that the vi ...
. According to Article One, Section Three of the
United States Constitution The Constitution of the United States is the Supremacy Clause, supreme law of the United States, United States of America. It superseded the Articles of Confederation, the nation's first constitution, on March 4, 1789. Originally includi ...
, the vice president of the United States is the
president of the Senate President of the Senate is a title often given to the presiding officer of a senate. It corresponds to the Speaker (politics), speaker in some other assemblies. The senate president often ranks high in a jurisdiction's Order of succession, succes ...
(despite not being a senator), and the Senate must choose a president ''
pro tempore ''Pro tempore'' (), abbreviated ''pro tem'' or ''p.t.'', is a Latin phrase which best translates to 'for the time being' in English. This phrase is often used to describe a person who acts as a '' locum tenens'' ('placeholder'). The phrase is ...
'' to act in the vice president's absence. The president pro tempore is elected by the Senate as a whole, usually by a resolution which is adopted by unanimous consent without a formal vote. The Constitution does not specify who can serve in this position, but the Senate has always elected one of its current members. Unlike the vice president, the president pro tempore cannot cast a tie-breaking vote when the Senate is evenly divided. The president pro tempore has enjoyed many privileges and some limited powers. During the vice president's absence, the president pro tempore is empowered to preside over Senate sessions. Except when necessary or to highlight important votes, the vice president and the president pro tempore rarely preside; instead, the duty of presiding officer is rotated among junior U.S. senators of the majority party to give them experience in
parliamentary procedure Parliamentary procedures are the accepted Procedural law, rules, ethics, and Norm (sociology), customs governing meetings of an deliberative assembly, assembly or organization. Their object is to allow orderly deliberation upon questions of inte ...
. Since 1945, the most senior U.S. senator in the majority party has generally (though not always) been chosen to be president pro tempore and holds the office continuously until the election of another. Since the enactment of the current
Presidential Succession Act The United States Presidential Succession Act is a federal statute establishing the presidential line of succession. Article II, Section 1, Clause 6 of the United States Constitution authorizes Congress to enact such a statute: Congress ha ...
in 1947, the president pro tempore is third in the presidential line of succession, after the vice president and the speaker of the House of Representatives. The current president pro tempore of the U.S. Senate is
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 ...
.


Power and responsibilities

Although the position is in some ways analogous to the
speaker of the United States House of Representatives The speaker of the United States House of Representatives, commonly known as the speaker of the House or House speaker, is the Speaker (politics), presiding officer of the United States House of Representatives, the lower chamber of the United ...
, the powers of the president pro tempore are far more limited. In the Senate, most power rests with the majority leader and other individual senators, but as the chamber's presiding officer, the president pro tempore is authorized to perform certain duties in the absence of the vice president, including ruling on points of order. Additionally, under the 25th Amendment to the Constitution, the president pro tempore and the speaker are the two authorities to whom declarations must be transmitted that the president is unable to perform the duties of the office, or is able to resume doing so. The president pro tempore is third in the line of presidential succession, following the vice president and the speaker, and consequently is one of the few members of Congress entitled to a full-time security detail. Additional duties include appointment of various congressional officers, certain commissions, advisory boards, and committees. The president pro tempore is the designated legal recipient of various reports to the Senate, including War Powers Act reports under which they, jointly with the speaker, may require the president to call Congress back into session. The officeholder is an ''ex officio'' member of various boards and commissions. With the
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and
sergeant at arms A serjeant-at-arms or sergeant-at-arms is an officer appointed by a deliberative body, usually a legislature, to keep order during its meetings. The word "serjeant" is derived from the Latin , which means "servant". Historically, serjeants-at-a ...
, the president pro tempore maintains order in Senate portions of the Capitol and Senate buildings.


History


Position established

The office of president pro tempore was established by the
Constitution of the United States The Constitution of the United States is the Supremacy Clause, supreme law of the United States, United States of America. It superseded the Articles of Confederation, the nation's first constitution, on March 4, 1789. Originally includi ...
in 1789. Between 1792 and 1886, the president pro tempore was second in the line of presidential succession, following the vice president and preceding the speaker. Through 1891, the president pro tempore was appointed on an intermittent basis only, when the vice president was not present to preside over the Senate, or at the adjournment of a session of Congress. The first president pro tempore, John Langdon, was elected on April 6, 1789, serving four separate terms between 1789 and 1793. "More than twelve senators held the office during the Senate's first decade", presiding over sessions, signing legislation, and performing routine administrative tasks. Whenever the office of the vice presidency was vacant, as it was on ten occasions between 1812 and 1889, the office garnered heightened importance, for although he did not assume the vice presidency, the president pro tempore stood next in line for the presidency. Before the ratification of the Twenty-fifth Amendment in 1967, a vacancy in the vice presidency could be filled only by a regular election; several individuals who served during these vacancies were referred to informally as "acting vice president". On three occasions during the 19th century, the Senate was without both a president and a president pro tempore: * from July 9 to July 11, 1850, following
Millard Fillmore Millard Fillmore (January 7, 1800 – March 8, 1874) was the 13th president of the United States, serving from 1850 to 1853. He was the last president to be a member of the Whig Party while in the White House, and the last to be neither a De ...
's accession to the presidency upon the death of
Zachary Taylor Zachary Taylor (November 24, 1784 – July 9, 1850) was an American military officer and politician who was the 12th president of the United States, serving from 1849 until his death in 1850. Taylor was a career officer in the United States ...
, until William R. King was elected president pro tempore; * from September 19 to October 10, 1881, following Chester Arthur's accession to the presidency upon the death of James A. Garfield, until Thomas F. Bayard was elected president pro tempore; * from November 25 to December 7, 1885, following the death of Vice President Thomas A. Hendricks, until John Sherman was elected president pro tempore. When President
Andrew Johnson Andrew Johnson (December 29, 1808July 31, 1875) was the 17th president of the United States, serving from 1865 to 1869. The 16th vice president, he assumed the presidency following the assassination of Abraham Lincoln. Johnson was a South ...
, who had no vice president, was impeached and tried in 1868, Senate President pro tempore Benjamin Franklin Wade was next in line to the presidency. Wade's radicalism is thought by many historians to be a major reason why the Senate, which did not want to see Wade in the
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, acquitted Johnson.
Vice President A vice president or vice-president, also director in British English, is an officer in government or business who is below the president (chief executive officer) in rank. It can also refer to executive vice presidents, signifying that the vi ...
Henry Wilson died on November 22, 1875. Senator Thomas W. Ferry, being President pro tempore of the Senate, was next in the line of presidential succession, and remained so until March 4, 1877. As acting president of the senate, he presided over the 1876
impeachment trial An impeachment trial is a trial that functions as a component of an impeachment. Several governments utilize impeachment trials as a part of their processes for impeachment. Differences exist between governments as to what stage trials take place ...
of U.S. Secretary of War William Belknap and the meetings of the
Electoral Commission An election commission is a body charged with overseeing the implementation of electioneering process of any country. The formal names of election commissions vary from jurisdiction to jurisdiction, and may be styled an electoral commission, a c ...
created by Congress to resolve the disputed 1876 presidential election. Still president pro tempore at that time, he would have temporally become the
acting president An acting president is a person who temporarily fills the role of a country's president when the incumbent president is unavailable (such as by illness or visiting abroad) or when the post is vacant (such as for death Death is the en ...
had the Electoral College vote not been certified by March 4, 1877; Congress certified Rutherford B. Hayes as the winner of the Electoral College vote on March 2. The president pro tempore and the speaker of the House were removed from the presidential line of succession in 1886. Both were restored to it in 1947, though this time with the president pro tempore following the speaker. William P. Frye served as president pro tempore from 1896 to 1911 (the 54th through the 62nd Congresses), a tenure longer than anyone else. He resigned from the position due to ill health shortly before his death. Electing his successor proved difficult, as Senate Republicans, then in the majority, were split between progressive and
conservative Conservatism is a cultural, social, and political philosophy and ideology that seeks to promote and preserve traditional institutions, customs, and values. The central tenets of conservatism may vary in relation to the culture and civiliza ...
factions, each promoting its own candidate. Likewise, the Democrats proposed their own candidate. As a result of this three-way split, no individual received a majority vote. It took four months for a compromise solution to emerge: Democrat Augustus Bacon served for a single day, August 14, 1911, during the vice president's absence. Thereafter, Bacon and four Republicans—
Charles Curtis Charles Curtis (January 25, 1860 – February 8, 1936) was the 31st vice president of the United States from 1929 to 1933 under President Herbert Hoover. He was the Senate Majority Leader from 1924 to 1929. An enrolled member of the Kaw Natio ...
, Jacob Gallinger,
Henry Cabot Lodge Henry Cabot Lodge (May 12, 1850November 9, 1924) was an American politician, historian, lawyer, and statesman from Massachusetts. A member of the History of the Republican Party (United States), Republican Party, he served in the United States ...
, and Frank Brandegee—alternated as president pro tempore for the remainder of that Congress's session.


Modern era

In January 1945, the Senate elected Kenneth McKellar, who at the time was the senator with the longest continuous service, as its president pro tempore. Since then, it has become customary for the majority party's most senior member to hold this position. Patty Murray was elected president pro tempore in January 2023, the first woman to hold the position. At the time of her election, she was the second-most senior member of the majority party. Historically, presidents pro tempore would preside over any
joint session of the United States Congress A joint session of the United States Congress is a gathering of members of the two chambers of the bicameral legislature of the federal government of the United States: the Senate and the House of Representatives. Joint sessions can be held on ...
alongside the speaker of the house when there was a vacancy in the vice presidency. With the ratification of the
Twenty-fifth Amendment to the United States Constitution The Twenty-fifth Amendment (Amendment XXV) to the United States Constitution addresses issues related to presidential succession and disability. It clarifies that the Vice President of the United States, vice president becomes President of th ...
in 1967, vacancies in the vice presidency became much less common. However, a need for the president pro tempore to preside came in September 2001, following the 9/11 terrorist attacks. Due to heightened security concerns during 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 ...
's September 20 address to Congress, Vice President
Dick Cheney Richard Bruce Cheney ( ; born January 30, 1941) is an American former politician and businessman who served as the 46th vice president of the United States from 2001 to 2009 under President George W. Bush. He has been called vice presidency o ...
stayed at another location as a designated survivor, and President Pro Tempore
Robert Byrd Robert Carlyle Byrd (born Cornelius Calvin Sale Jr.; November 20, 1917 – June 28, 2010) was an American politician who served as a United States senator from West Virginia for over 51 years, from 1959 until his death in 2010. A Democratic Pa ...
presided in his absence. President pro tempore
Patrick Leahy Patrick Joseph Leahy ( ; born March 31, 1940) is an American politician and attorney who represented Vermont in the United States Senate from 1975 to 2023. A member of the Democratic Party (United States), Democratic Party, he also was the pr ...
presided over the
second impeachment of Donald Trump Donald Trump, serving as the 45th president of the United States, was impeached for the second time on January 13, 2021, one week before his term expired. On that date, the House of Representatives adopted one article of impeachment again ...
in 2021. The
Chief Justice of the United States The chief justice of the United States is the chief judge of the Supreme Court of the United States and is the highest-ranking officer of the U.S. federal judiciary. Appointments Clause, Article II, Section 2, Clause 2 of the U.S. Constitution g ...
had presided over all previous presidential impeachment trials, as prescribed by the Constitution, but in this case Trump was no longer a sitting president when the trial began.


Related officials


Acting president pro tempore

While the president pro tempore does have other official duties, the holders of the office have, like the vice president, over time ceased presiding over the Senate on a daily basis, owing to the mundane and ceremonial nature of the position. Furthermore, as the president pro tempore is usually the most senior senator of the majority party, they most likely also chair a major Senate committee and have other significant demands on their time. Therefore, the president pro tempore has less time now than in the past to preside daily over the Senate. Instead, junior senators from the majority party are designated acting president pro tempore to preside over the Senate. This allows junior senators to learn proper parliamentary procedure. The acting president pro tempore is usually reappointed daily by the president pro tempore.


Permanent acting president pro tempore

In June 1963, because of the illness of president pro tempore Carl Hayden, Lee Metcalf was designated permanent acting president pro tempore. No term was imposed on this designation, so Metcalf retained it until he died in office in 1978.


Deputy president pro tempore

The ceremonial post of deputy president pro tempore was created for Hubert Humphrey, a former vice president, in 1977 following his losing bid to become the
Senate majority leader The positions of majority leader and minority leader are held by two United States senators and people of the party leadership of the United States Senate. They serve as chief spokespersons for their respective political parties, holding the ...
. The Senate resolution creating the position stated that any former president or former vice president serving in the Senate would be entitled to this position. However, since Humphrey, none has served. George J. Mitchell was elected deputy president pro tempore in 1987, because of the illness of president pro tempore John C. Stennis, similar to Metcalf's earlier designation as permanent acting president pro tempore. The office has remained vacant since 1989 and no senator other than Humphrey and Mitchell has held it since its creation.


President pro tempore emeritus/emerita

Since 2001, the honorary title of president pro tempore
emeritus ''Emeritus/Emerita'' () is an honorary title granted to someone who retires from a position of distinction, most commonly an academic faculty position, but is allowed to continue using the previous title, as in "professor emeritus". In some c ...
has been given to a senator of the minority party who has previously served as president pro tempore. It has been held by
Strom Thurmond James Strom Thurmond Sr. (December 5, 1902 – June 26, 2003) was an American politician who represented South Carolina in the United States Senate from 1954 to 2003. Before his 49 years as a senator, he served as the 103rd governor of South ...
(R-
South Carolina South Carolina ( ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders North Carolina to the north and northeast, the Atlantic Ocean to the southeast, and Georgia (U.S. state), Georg ...
) (2001–2003),
Robert Byrd Robert Carlyle Byrd (born Cornelius Calvin Sale Jr.; November 20, 1917 – June 28, 2010) was an American politician who served as a United States senator from West Virginia for over 51 years, from 1959 until his death in 2010. A Democratic Pa ...
(D-
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 ...
) (2003–2007),
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 ...
(R-
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 ...
) (2007–2009),
Patrick Leahy Patrick Joseph Leahy ( ; born March 31, 1940) is an American politician and attorney who represented Vermont in the United States Senate from 1975 to 2023. A member of the Democratic Party (United States), Democratic Party, he also was the pr ...
(D-
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 ...
) (2015–2021),
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 ...
(R-
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 ...
) (2021–2025), and Patty Murray (D- Washington) (2025–present). From 2009 to 2015, no senator met the requirements for it. The position was created for Thurmond when the Democratic Party regained a majority in the Senate in June 2001. With the change in party control, Democrat Robert Byrd of West Virginia replaced Thurmond as president pro tempore, reclaiming a position he had previously held from 1989 to 1995 and briefly in January 2001. Thurmond's retirement from the Senate on January 3, 2003, coincided with a change from Democratic to Republican control, making Stevens president pro tempore and Byrd the second president pro tempore emeritus. In 2007, Byrd returned as president pro tempore, and Stevens became the third president pro tempore emeritus, when the Democrats gained control of the Senate. Although a president pro tempore emeritus has no official duties, they are entitled to an increase in staff, and advise party leaders on the functions of the Senate. The office's accompanying budget increase was removed toward the end of the 113th Congress, shortly before Patrick Leahy was to become the first holder of the office in six years.


Salary

The salary of the president pro tempore for 2024 was $193,400, equal to that of the majority leaders and minority leaders of both houses of Congress. If there is a vacancy in the office of vice president, then the salary would be the same as that of the vice president. The salary alongside the salary of the members of Congress has not been adjusted since 2009.


See also

*
Seniority in the United States Senate United States senators are conventionally ranked by the length of their tenure in the Senate. The senator in each U.S. state with the longer time in office is known as the ''senior senator''; the other is the ''junior senator''. This convention ...


References


External links

* {{US presidential line of succession
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
United States Senate