2020 comparison maps exclude places where third-party candidates won more than 5 percent of the vote. The Associated Press also provides estimates for the share of votes reported, which are shown for races for which The Times does not publish its own estimates. These are only estimates, and they may not be informed by reports from election officials.

The Times estimates the share of votes reported and the number of remaining votes, based on historic turnout data and reporting from results providers. Source: Election results and race calls are from The Associated Press.