Blue Shift (politics)
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In
American politics In the United States, politics functions within a framework of a constitutional federal republic, federal democratic republic with a presidential system. The three distinct branches Separation of powers, share powers: United States Congress, C ...
, a blue shift, also called a red mirage, is an observed phenomenon under which counts of in-person votes are more likely than overall vote counts to be for the Republican Party (whose party color is red), while provisional votes or absentee ballots, which are often counted later, are more likely than overall vote counts to be for the Democratic Party (whose color is blue). This means that election day results can initially indicate a Republican is ahead, but adding provisional ballots and absentee ballots into the count can eventually show a Democratic victory. Confusion about the blue shift phenomenon has led some Republicans to call the legitimacy of elections into question. Blue shift occurs because young voters, low-income voters, and voters who relocate often are likely both to vote provisionally and to lean Democratic. This phenomenon remains poorly understood by the general public and election experts, and can cause confusion given that Americans are accustomed to learning projected results on election day and often times assume the projected results announced then are an accurate representation of final results.


Background

The phenomenon was first identified by Edward Foley of
Ohio State University The Ohio State University (Ohio State or OSU) is a public university, public Land-grant university, land-grant research university in Columbus, Ohio, United States. A member of the University System of Ohio, it was founded in 1870. It is one ...
in 2013. He found that Democratic candidates are significantly more likely to gain votes during the "canvass" period, which is the votes counted after election night. This asymmetry has not always existed; in the 20th century, as recently as the
1996 United States presidential election United States presidential election, Presidential elections were held in the United States on November 5, 1996. Incumbent Democratic Party (United States), Democratic President Bill Clinton and his running mate, incumbent Democratic Vice Presi ...
, Republicans and Democrats were both able to cut their opponents' leads during the canvass period. Foley conjectured that the 2002 enactment of the
Help America Vote Act The Help America Vote Act of 2002 ( Pub. L.Tooltip Public Law (United States)107–252 (text) (PDF)), or HAVA, is a United States federal law, which was authored by Christopher Dodd, and passed in the House 357-48 and 92–2 in the Senate and was ...
accelerated the pronounced asymmetry of the blue shift phenomenon, because it required states to allow provisional ballots to be cast. He later found that the variation in the size of the blue shift is positively associated with the number of provisional ballots and the Democratic partisanship of the state in question. The growth in the persistent blue-shifted overtime vote began with the
2004 United States presidential election Presidential elections were held in the United States on November 2, 2004. Incumbent Republican President George W. Bush and his running mate, incumbent Vice President Dick Cheney, were re-elected to a second term. They narrowly defeated ...
. However, Foley has stated that political scientists have not fully "pinned down causality" of this phenomenon. Foley did not find that mail-in or absentee votes favored either party. As results are tabulated on election night, smaller and more rural jurisdictions have fewer ballots to tabulate, so can complete reporting faster. Thus, early results often lean conservative as larger counties take their time to process ballots. One notable instance of this occurring was the
2010 California Attorney General election The 2010 California Attorney General election was held on November 2, 2010, to choose the California Attorney General, Attorney General of California. The primary election was held on June 8, 2010. Incumbent California Attorney General, Attor ...
. Republican Steve Cooley was up by several points with
Los Angeles Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...
and Alameda counties, two of the state's largest, scheduled to report most of their ballots around midnight. In order to meet evening newscasts, Cooley declared victory at 11 pm, but continuing results from the urban counties led to the race being declared too close to call by most media outlets, and Cooley ultimately losing to Democrat
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 ...
by 0.7 percentage points. States vary in their rules for processing mail-in ballots. While some require they be received by the elections office by election day, others allow them to arrive later and still be counted, provided they are postmarked by election day. Some states allow ballots to be processed as they are delivered, while some force elections offices to wait until election day to verify signatures and open envelopes. These factors can influence the difference between the vote that is announced on election night and that counted later.


2018 elections

One example is the
2018 California's 39th congressional district election The 2018 California's 39th congressional district election was held on Tuesday, November 6, 2018, with a primary election being held on June 5, 2018. Incumbent Republican Representative Ed Royce retired instead of running for a 14th term. T ...
. This was a closely contested race for an open seat in the
United States House of Representatives The United States House of Representatives is a chamber of the Bicameralism, bicameral United States Congress; it is the lower house, with the U.S. Senate being the upper house. Together, the House and Senate have the authority under Artic ...
that included portions of Orange,
Los Angeles Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...
, and San Bernardino counties in
Southern California Southern California (commonly shortened to SoCal) is a geographic and Cultural area, cultural List of regions of California, region that generally comprises the southern portion of the U.S. state of California. Its densely populated coastal reg ...
. Republican
Young Kim Young Oak Kim (, born October 18, 1962) is a South Korean-born American politician and businesswoman serving as the U.S. representative for California's 40th congressional district, previously representing the 39th congressional district fr ...
was running against Democrat
Gil Cisneros Gilbert Ray Cisneros Jr. (born February 12, 1971) is an American government official, philanthropist, and politician who is a member of the United States House of Representatives, representing California's 31st congressional district since 2025. ...
. On election night, November 6, Kim held a lead of 3 percentage points and over 15,000 votes over Cisneros. However, as the votes were counted over the ensuing weeks, Cisneros overtook Kim in the vote count, and won the election. A blue shift occurred in other California races as wellRepublican House incumbents Jeff Denham,
Mimi Walters Marian Elaine "Mimi" Walters (née Krogius; born May 14, 1962) is an American businesswoman and politician. A member of the Republican Party, she served from 2015 to 2019 as the U.S. representative for California's 45th congressional distric ...
and David Valadao were all leading on election night, but ended up losing as mail-in ballots skewed heavily in favor of their Democratic challengers. Another notable example of blue shift was the 2018 United States Senate election in Arizona between Republican Martha McSally and Democrat
Kyrsten Sinema Kyrsten Lea Sinema ( ; born July 12, 1976) is an American politician, lawyer, and former social worker who served from 2019 to 2025 as a United States senator from Arizona. A former member of the Democratic Party, Sinema became an independent ...
. McSally led the vote count on election night, but Sinema ultimately won the election due to mail-in ballots. Democrats initially thought that they had lost that election, when they had actually won. In addition to these examples, blue shift has been documented 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 ...
,
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 ...
,
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 ...
, and
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 ...
, among other states.


2020 elections

Foley expressed concern that this phenomenon, along with difficulties in conducting the election during a
pandemic A pandemic ( ) is an epidemic of an infectious disease that has a sudden increase in cases and spreads across a large region, for instance multiple continents or worldwide, affecting a substantial number of individuals. Widespread endemic (epi ...
, could lead to "a perfect storm" in the
2020 United States presidential election United States presidential election, Presidential elections were held in the United States on November 3, 2020. The Democratic Party (United States), Democratic ticket of former vice president Joe Biden and California junior senator Kamala H ...
. This concern was particularly pronounced due to the fact that incumbent president
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 ...
did not state before the election whether he would accept the election results. Given Trump's repeated attacks on mail balloting, nonpartisan experts warned that he could attempt to block the blue shift by building up a lead among ballots cast on Election Day, and then disputing the legitimacy of mail-in and absentee ballots. The
United States Postal Service The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or simply the Postal Service, is an independent agencies of the United States government, independent agency of the executive branch of the federal governmen ...
had cost-cutting policies put in place by its new director Louis DeJoy, who was a top donor and fundraiser to Donald Trump, and these cost-cutting policies further slowed delivery of postal ballots. Trump had openly stated that he opposed USPS funding, specifically to prevent mail-in ballots, due to his fears that it could hurt his chances of re-election. These changes have become known as the 2020 United States Postal Service crisis. Some accused Trump of "intentionally
kneecapping Kneecapping is a form of malicious wounding, often as torture, in which the victim is injured in the knee. The injury is typically inflicted by a low-velocity gunshot to the knee pit with a handgun. The term is considered a misnomer by medical ...
the postal service in an attempt to sabotage the election." These concerns were echoed by former president
Barack Obama Barack Hussein Obama II (born August 4, 1961) is an American politician who was the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, he was the first African American president in American history. O ...
, who described Trump's threats as "unheard of". For this reason, election experts advocated that postal ballots be mailed weeks in advance of Election Day. As an alternative solution, Jamelle Bouie of ''
The New York Times ''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...
'' advocated that Democrats vote in person if they were able.


Predictions

U.S. data and analytics company Hawkfish predicted that on election night in 2020, U.S. Republican party nominee and presidential incumbent Donald Trump would receive more in-person votes than Joe Biden, his Democratic party nominee and principal challenger, but when absentee, provisional, and mail-in ballots were counted, the election would swing against Trump in a classic "red mirage" or "blue shift" scenario. Hawkfish's survey asked 17,263 American voters whether they planned to use absentee ballots or go to the polls. Asked about the scenario, Trump campaign communications director Tim Murtaugh told reporters, "The news media should get out of the business of predicting the future."


Vote counts

Within hours after the earliest poll closings on the evening of November3, 2020, Trump claimed victory in several states that had Trump leading, but in which his margins were shrinking as mail-in ballots were counted. At 2:30a.m. EST on Wednesday, speaking to supporters, he said, "We want all voting to stop." At the time he had a lead in Michigan of 300,000 votes and in Pennsylvania of 690,000 votes.
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 ...
was also seeing a red mirage, but the
Associated Press The Associated Press (AP) is an American not-for-profit organization, not-for-profit news agency headquartered in New York City. Founded in 1846, it operates as a cooperative, unincorporated association, and produces news reports that are dist ...
called the state for Biden at 4:40a.m. after a ballot dump of 69,000 absentee ballots turned Trump's 31,000-vote lead into a narrow lead for Biden that would be impossible for the outstanding vote total to surpass. By 8:30a.m., with counting of absentee ballots underway, Biden had pulled ahead in Michigan and cut Trump's lead in Pennsylvania to 610,000 votes; as Biden continued to increase his lead in Michigan, the Associated Press called the state for him at 5:56p.m. EST. At 11:25a.m. EST on November 7, four days after Election Night,
ABC News ABC News most commonly refers to: * ABC News (Australia), a national news service of the Australian Broadcasting Corporation * ABC News (United States), a news-gathering and broadcasting division of the American Broadcasting Company ABC News may a ...
,
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,
CBS News CBS News is the news division of the American television and radio broadcaster CBS. It is headquartered in New York City. CBS News television programs include ''CBS Evening News'', ''CBS Mornings'', news magazine programs ''CBS News Sunday Morn ...
, the Associated Press,
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and
Fox News The Fox News Channel (FNC), commonly known as Fox News, is an American Multinational corporation, multinational Conservatism in the United States, conservative List of news television channels, news and political commentary Television stati ...
all called the election for Biden based on his large lead in Pennsylvania and the fact that the outstanding vote total, mostly from heavily Democratic areas, would be nearly impossible for Trump to overcome.


2022 elections

After the January 6 Capitol attack, Democrats repeatedly sounded the alarm that this phenomenon in the last two election cycles could lead to "a perfect storm" in the
2022 United States elections Elections in the United States, Elections were held in the United States on November 8, 2022, with the exception of absentee balloting. During this U.S. midterm election, which occurred during the term of president Joe Biden, all 435 seats in ...
. The blue shift will decide the election. This concern was particularly pronounced because 291 GOP candidates refused to accept election results, and nonpartisan experts warned that they will plan to build up a lead among ballots cast on Election Day, claim victory, and then say, "stop counting ballots because all those absentee ballots are illegitimate", thus disallowing the likely blue shift. In the end, Democrats had an unexpected and historic strength in state-level and senatorial elections. 2022 is the first midterm since
1934 Events January–February * January 1 – The International Telecommunication Union, a specialist agency of the League of Nations, is established. * January 15 – The 8.0 1934 Nepal–Bihar earthquake, Nepal–Bihar earthquake strik ...
in which the president's party did not lose any state legislative chambers or incumbent senators and the Democrats did so under a DNC president after winning in Nevada, Arizona, and Pennsylvania. It was also the first midterm since 1986 in which either party achieved a net gain of governorships while holding the presidency, and the first time ever in a disadvantageous position. It was later revealed that young voters helped save the Democrats and without them they would lose both chambers of Congress.


In other countries

There are differing reports in other countries as to whether mail-in or early ballots have a notably different political makeup than election day in person votes. In Germany, mail-in voters tend to be more urban than in person voters, tend to be more certain about their voting decisions, and favor bigger parties. A "shift" does not usually feature in news coverage as both in-person and mail-in votes are counted beginning at 18:00 when polling booths close. Mail-in votes that arrive later than 18:00 on election day are discardedeven if they only arrived late due to circumstances outside of the control of voters. However, given that
exit poll An election exit poll is a poll of voters taken immediately after they have exited the polling stations. A similar poll conducted before actual voters have voted is called an entrance poll. Pollsters – usually private companies working fo ...
s are based ''only'' on in-person voters, the first prognosis of the election result, which is released immediately after polls close, often differs from the final result among other reasons due to the effect of mail-in ballots. The 2020 Bavarian local elections had their runoff election held as all mail-in (due to the COVID-19 pandemic) and some observers discounted that it had any partisan effect. Germany has seen an increase of mail-in voting at federal elections since their introduction in 1957 from less than one in twenty in 1957 to more than one in four in 2017. In the May round of the 2016 Austrian presidential election, exit polls correctly pointed to a narrow lead for Norbert Hofer among those who voted at a polling station. The postal votes, which made up about 12% of the total vote, were slightly but definitively in favour of his rival
Alexander Van der Bellen Alexander "Sascha" Van der Bellen (; born 18 January 1944), also referred to by the abbreviation VdB, is an Austrian politician serving as the president of Austria since 2017. He previously served as a professor of economics at the University ...
, and ultimately gave Van der Bellen victory.


See also

* ''
Bush v. Gore ''Bush v. Gore'', 531 U.S. 98 (2000), was a landmark decision of the Supreme Court of the United States, United States Supreme Court on December 12, 2000, that settled a recount dispute in Florida's 2000 presidential election between George W ...
'' * Dewey Defeats Truman * Shy Tory factor *
Swing (politics) An electoral swing analysis (or swing) shows the extent of change in voter support, typically from one election to another, expressed as a positive or negative percentage. A multi-party swing is an indicator of a change in the electorate's prefere ...


References


External links

* *{{Cite web , last=Mejia , first=Nathaniel Rakich, Elena , date=2020-10-30 , title=When To Expect Election Results In Every State , url=https://projects.fivethirtyeight.com/election-results-timing/ , archive-url=https://web.archive.org/web/20201030231229/https://projects.fivethirtyeight.com/election-results-timing/ , url-status=dead , archive-date=October 30, 2020 , access-date=2022-05-12 , website=FiveThirtyEight , language=en American political neologisms Donald Trump Elections in the United States Voting in the United States 2020 neologisms 2020 United States presidential election Political science terminology Psephology