Election 2020 updates: Biden warns of 'dark winter,' pushes masks in pandemic plan

ABC News' Senior Congressional Correspondent Mary Bruce says that the Biden campaign knew Florida would be "a toss up," but she suspects that the campaign is "very surprised" by how tight the race is is key areas like Miami-Dade. Bruce touted how much time the Biden campaign spent in the state trying to win voters, especially the key demographic of senior voters.

"They have put a lot of effort into trying to get out the vote there and so much of the message there, of course, on the pandemic as they try to target senior voters," Bruce said.

The polls are closing in Arkansas.

ABC Senior White House Correspondent Cecilia Vega said "this election could be the Latino election" as Latino Americans have voted early and in higher numbers than they ever have before. Both the Biden and Trump campaigns have pushed hard to win Latino voters, who make up a sizable portion of the electorate in key states like Florida.

Keep in mind, however, that "Latinos are not a monolith," Vega said. "Latinos who vote in Florida  tend to vote very differently than say Mexican Americans that we see in places like Texas and Arizona."

ABC News projects Trump will win in Tennessee and Indiana, raising his Electoral College count to 42. Biden's stands at 44. 

Also in Tennessee, Republican Bill Hagerty is projected to defeat Democratic candidate Marquita Bradshaw to fill the seat of retiring GOP Sen. Lamar Alexander.