In Nevada, where early in-person voting began on Saturday, Democratic voters cast 23,000 more ballots than Republicans as of Tuesday afternoon, good for a 15-percentage-point edge in the nearly 150,000 ballots cast. (Mail in and absentee ballots narrow the gap slightly).

Polling and early voting returns suggest Democrats are maintaining an edge in North Carolina, and they are also slicing into a thinner-than-expected early vote lead for Republicans in Florida, who now lead by about half a percentage point; in 2012, the GOP held a much more significant edge two weeks from Election Day. Women in Florida are casting early ballots in far greater numbers than four years ago, and Hispanic turnout is surging as well, according to data released by the Clinton campaign. Polls suggest that both constituencies are strongly Democratic this year.

In Colorado — where Democrats hold a voter registration edge for the first time — early returns give the party a 23,000-vote lead in returned and in-person ballots. In Arizona, which last went Democratic in 1996, Democrats held a thin early-vote lead on Monday.