The election denial movement in the United States is a widespread false belief among many Republicans that elections in the United States are rigged and stolen through election fraud by Democrats. Adherents of the movement are referred to as election deniers. Election fraud conspiracy theories have spread online and through conservative conferences, community events, and door-to-door canvassing. Since the 2020 United States presidential election, many Republican politicians have sought elective office or taken legislative steps to address what they assert is weak election integrity leading to widespread fraudulent elections, though no evidence of systemic election fraud has come to light and many studies have found that it is extremely rare.
The movement came to prominence after Donald Trump was defeated in the 2020 United States presidential election. Trump had a history of questioning elections before he ran for office, notably the 2012 reelection of Barack Obama. He grew the movement among his supporters by making consistently false allegations of fraud during the 2016, and in particular the 2020 presidential election. With these false and unsubstantiated claims, Trump and his associates sought to overturn the 2020 election of Joe Biden; he and others have been indicted on federal and state charges involving election subversion. Trump's false allegations came to be known as his "big lie". Trump has since endorsed only Republican candidates who agree the 2020 election had been stolen from him, and he has not committed to accepting the results of the 2024 presidential election in which he is a candidate. By April 2024, Trump had embraced mail-in balloting and early voting, which he had for years vilified as corrupt and contributors to his 2020 election loss.