List of Democrats who opposed the Joe Biden 2024 presidential campaign

In the lead-up to the 2024 United States presidential election, there was doubt about Joe Biden's ability to run for re-election. Before announcing his reelection campaign, he was facing historically low approval ratings, and several polls showed a majority of Democratic voters did not want him to run.

On April 25, 2023, Biden announced his 2024 candidacy to mixed reactions, though most Democratic voters said they would support his campaign. In October, dissent from other Democrats grew following his response to the October 7 attacks and the subsequent United States support for Israel in the Gaza war.

As the 2024 Democratic primaries began, Muslim leaders and anti-war activists led Gaza war protest vote movements, urging Democrats to write-in or vote uncommitted. On March 12, Biden secured enough delegates to become the presumptive nominee of the Democratic Party, despite primary challenges from U.S. Representative Dean Phillips and Marianne Williamson. He ultimately finished the primary season holding nearly all of the delegates.

After his poorly received performance in the first presidential debate on June 27, there was speculation that Biden might end his campaign. Concerns about Biden's age existed before the debate, but they increased after the debate. With less than two months before the Democratic National Convention, elected officials, donors, and celebrities began to call for Biden to drop out of the race. On July 21, Biden announced that he would no longer be seeking re-election.