Nationwide opinion polling for the 2016 Democratic Party presidential primaries

This is a list of nationwide public opinion polls that have been conducted relating to the Democratic primaries for the 2016 United States presidential election. The persons named in the polls are declared candidates, are former candidates, or have received media speculation about their possible candidacy.

Aggregate polling
In the following tables, blue indicates the highest percentage and percentages within the margin of error of the highest in each poll.