Early voting results are predicting tight races in key states, with Donald Trump holding potential advantages in Florida, Ohio and elsewhere, while more Democrats have cast early ballots in Nevada and North Carolina.

In Florida, Republicans have a 1.8 percent lead in ballots received as of last Friday, reported Fox News. Republicans and Democrats had equally requested 3.1 million early ballots, a record for the state.

In Ohio, early voting among blacks, critical in President Barack Obama's victories there in 2008 and 2012, is down 10 percent while early ballot request among whites is up three percent, said Fox News.

Politico reported on Tuesday that Democrats had cast 23,000 more ballots than Republicans out of the 150,000 cast in Nevada so far, and they also hold a slight edge in ballots cast in North Carolina.

Nevada's Clark County GOP chairman Dwight Mazzone told Politico that while "a hell of a lot" of Trump supporters have early voted there, Democrats have been creative in getting out their supporters.

"The stories I hear is that the unions are busing people into the polls, giving them lunch, giving them a T-shirt," Mazzone told Politico. "Republicans have never done that."

WFAA-TV reported on Monday that Texas early voters set records on the first day polls were open in Dallas County (more than 58,000) and Tarrant County (more than 43,000), in the Dallas-Fort Worth area.

Susan Milligan, a political and foreign affairs writer for U.S. News & World Report, said overall early voting tabulations show that Democrats have received more ballots than Republicans so far.

"That's good news for the Clinton campaign, but not necessary definitive, experts say, since the early numbers are as much an indicator of the kind of person who votes early, as opposed to how much statewide support each contender has," said Milligan.

Democratic strategist Rick Ridder told U.S. News & World Report that while Democrats appear to be getting voters out to the polls in early voting, it does not mean that Republicans won't erase that advantage.

"People who vote early tend to be pretty firm in their convictions," said Ridder.