Overall, 39% of registered voters say they will vote by mail, well above the 21% who say they normally do so, according to a new poll from The Associated Press-NORC Center for Public Affairs Research. The rise is skewed toward backers of the former vice president, 53% of whom plan to vote by mail. Fifty-seven percent of Trump’s supporters say they’ll vote in person on Nov. 3.

Fifty-four percent of voters say they will vote before polls open on Election Day. In 2016, roughly 42% of voters did so.

Trump for months has denigrated mail voting, and Democrats have expressed concern about postal delays that could keep such ballots from being counted. The poll finds ebbing enthusiasm for mail voting: Only 28% of Americans say they would favor their state holding elections exclusively by mail, down from the 40% who said so in April as the coronavirus pandemic was first spreading in the U.S. and before Trump launched his anti-mail campaign.