The tracking poll finds little shift in Clinton’s overall support following news of the FBI’s renewed look at Clinton e-mails, but strong enthusiasm among her supporters fell behind Trump in combined Saturday and Sunday interviews. By 53 to 43 percent, more Trump supporters say they are “very enthusiastic” about him, compared with Thursday and Friday when Trump’s edge was negligible (53 percent vs. 51 percent).

Voter enthusiasm has been in short supply for both Hillary Clinton and Donald Trump through the fall campaign and continues to lag excitement about candidates on the ballot four years ago. At this point in 2012, 64 percent of Obama supporters said they were “very enthusiastic” about him; Romney was only narrowly behind at 61 percent.

Trump and Clinton continue to run nearly even in overall vote preferences, with Trump at 46 percent and Clinton 45 percent in a four-way contest in the poll conducted Thursday through Sunday. The margin is a mirror 48-47 Clinton-Trump split when third-party candidates are asked which major-party candidate they lean toward, a comparison which has grown in importance as support declines steadily for Libertarian Gary Johnson and the Green Party’s Jill Stein.