Opinion polling for the 2024 Democratic Party presidential primaries

This is a list of nationwide public opinion polls that have been conducted relating to the Democratic primaries for the 2024 United States presidential election. The persons named in the polls are declared candidates or have received media speculation about their possible candidacy. The polls included are among Democrats or Democrats and Democratic-leaning independents. If multiple versions of polls are provided, the version among likely voters is prioritized, then registered voters, then adults.

Hypothetical polling
This section lists polling with hypothetical candidates, which was mostly conducted between 2020 and April 2023, before the presidential candidacies were declared.