Nearly one in five Republicans in the survey, 19%, said they would vote for Mr. Biden today. Among the GOP, Mr. Trump is winning 74%, far below the 96% that the president often cites as his level of support in his party.
The president tweeted on Wednesday in all capital letters, “The silent majority is stronger than ever, just watch!!!”
The Trump campaign has said many public polls undercount support for the president, and that its internal polling shows the president performing well against a “defined” Mr. Biden.