Upset (competition) in the context of Electoral politics

Presidential elections were held in the United States on November 8, 2016. The Republican ticket of businessman Donald Trump and Indiana governor Mike Pence defeated the Democratic ticket of former secretary of state Hillary Clinton and Virginia junior senator Tim Kaine, in what was considered one of the biggest political upsets in American history. It was the fifth and most recent presidential election in which the winning candidate lost the popular vote.

Incumbent Democratic president Barack Obama was ineligible to pursue a third term due to the term limits established by the Twenty-second Amendment to the U.S. Constitution. Clinton secured the nomination over U.S. senator Bernie Sanders in the Democratic primary and became the first female presidential nominee of a major American political party. Initially considered a novelty candidate, Trump presented himself as a blunt-spoken political outsider and emerged as the Republican front-runner, defeating several notable opponents, including U.S. senators Ted Cruz and Marco Rubio, as well as governors John Kasich and Jeb Bush. Trump's right-wing populist, nationalist campaign, which promised to "Make America Great Again" and opposed political correctness, illegal immigration, and many US free trade agreements, garnered extensive free media coverage due to Trump's inflammatory comments. Clinton emphasized her extensive political experience; denounced Trump and half of his supporters as "deplorable" bigots and extremists; and advocated the expansion of Obama's policies, stressing racial equality, LGBT rights, women's rights, and inclusive capitalism.

Andrzej Sebastian Duda (born 16 May 1972) is a Polish lawyer and politician who served as the 6th president of Poland from 2015 to 2025. Before becoming president, he served as Member of the Sejm (MP) from 2011 to 2014 and as Member of the European Parliament (MEP) from 2014 to 2015.

Born in Kraków, Duda ran in the 2015 presidential election as candidate for the Law and Justice (PiS) party and defeated the incumbent president Bronisław Komorowski in a surprising and significant upset. In the first round of voting, he narrowly placed first but fell well short of the required absolute majority, finally winning in the second round of voting, receiving 51.55% of the vote. On 26 May 2015, Duda resigned his party membership as the president-elect.

The NCAA Division I men's basketball tournament, branded as March Madness, or The Big Dance, is a single-elimination tournament played in the United States to determine the men's college basketball national champion of the Division I level in the National Collegiate Athletic Association (NCAA). Played mostly during March, the tournament was first conducted in 1939 and currently consists of 68 teams. Known for its upsets of favored teams with its single game single-elimination format, it has become one of the greatest annual sporting events in the US.

The 68-team format was adopted in 2011; it had remained largely unchanged since 1985 when it expanded to 64 teams. Before then, the tournament size varied from as little as 8 to as many as 53. The field was restricted to conference champions until at-large bids were extended in 1975 and teams were not fully seeded until 1979. In 2020, the tournament was cancelled for the first time due to the COVID-19 pandemic; in the subsequent season, the tournament was contested completely in the state of Indiana as a precaution.

An underdog is a person or group participating in a competition, usually sports and creative works, who is largely expected to lose. The party, team, or individual expected to win is called the favorite or top dog. In the case where an underdog wins, the outcome is an upset. An "underdog bet" is a bet on the underdog or outsider for which the odds are generally higher.

The first recorded uses of the term occurred in the second half of the 19th century; its first meaning was "the beaten dog in a fight".

Presidential elections were held in the United States on November 2, 1948. The Democratic ticket of incumbent President Harry S. Truman and Senator Alben Barkley defeated the Republican ticket of New York Governor Thomas E. Dewey and California Governor Earl Warren and the Dixiecrat ticket of South Carolina Governor Strom Thurmond and Mississippi Governor Fielding Wright in one of the greatest election upsets in American history.

Truman had been elected vice president in the 1944 election, and he succeeded to the presidency in April 1945 upon the death of Franklin D. Roosevelt. He won his party's nomination at the 1948 Democratic National Convention only after defeating attempts to drop him from the ticket. The convention's civil rights plank caused a walkout by several Southern delegates, who launched a third-party "States' Rights Democratic Party" ticket, more commonly known as the Dixiecrats, led by South Carolina Governor Strom Thurmond. The Dixiecrats hoped to win enough electoral votes to force a contingent election in the House of Representatives, where they could extract concessions from either Dewey or Truman in exchange for their support. Former vice president Henry A. Wallace also challenged Truman by launching the Progressive Party and criticizing his confrontational Cold War policies. Dewey, the leader of his party's liberal eastern wing and the 1944 Republican presidential nominee, defeated conservative Ohio Senator Robert A. Taft and other challengers at the 1948 Republican National Convention. This was the first election to have primary and general election debates, with Dewey debating Harold Stassen in the Republican primary, while Norman Thomas debated Farrell Dobbs in the general election.

Mary Sattler Peltola (born August 31, 1973) is an American politician and former tribal judge who served as the U.S. representative from Alaska's at-large congressional district from 2022 to 2025. A member of the Democratic Party, she previously served as a judge on the Orutsararmiut Native Council's tribal court, executive director of the Kuskokwim River Inter-Tribal Fish Commission, Bethel city councilor, and member of the Alaska House of Representatives. As of 2025, Peltola is the most recent Democrat to have won or held statewide office in Alaska.

Peltola defeated Republican former Governor Sarah Palin and Republican Alaska Policy Forum board member Nick Begich III in an upset in the August 2022 special election to succeed Don Young, who had died that March. It was the first election to take place under the state's new ranked-choice voting system. In winning that election, Peltola became the first Alaska Native member of Congress, the first woman to represent Alaska in the House of Representatives, the first person born in Alaska elected to the House, and the first Democrat to serve as Alaska's representative in the House since Nick Begich Sr. in 1972.