The Georgia gubernatorial race between Democratic candidate Stacey Abrams and Georgia Secretary of State Brian Kemp could go to a runoff in December. (John Amis/AP)

Races in Arizona, Georgia and Florida don’t have clear winners the day after the election.

Election Day is over, and most of the results are known, but there a few nail biters that haven't been called. Races in some states, including Arizona, Florida and Georgia, are too close to call and have led to runoffs and recounts.

In Arizona's race for the Senate, two candidates are separated by about 16,000 votes with approximately 75 percent of results in. Republican Rep. Martha McSally was leading her Democratic opponent Rep. Kyrsten Sinema by less than 1 percent in the race to fill outgoing Republican Sen. Jeff Flake's seat.

According to The Arizona Republic, a clear winner may not be known for days because there are still many early voting ballots left to count.

In Georgia, a tight governor's race between former state house minority leader Democrat Stacey Abrams and two-term Republican Secretary of State Brian Kemp is keeping Abrams from conceding. The two are separated by about 64,200 votes, with Kemp earning 50.3 percent of votes and Abrams bringing in 48.7 percent.

Although Abrams' campaign says mail-in ballots and not-yet-counted early ballots could bring in additional votes in her favor, Kemp said the "math is on our side," despite any uncounted votes, the Associated Press reported. However, Abrams' campaign manager Lauren Groh-Wargo said about 15,000 votes separate the candidates from a December runoff.

In a situation all too familiar in Florida, a close race may lead to a recount. Florida Democratic Sen. Bill Nelson called for a recount on Wednesday in the Senate race against Republican Gov. Rick Scott. Nelson earned 49.8 percent of votes, just about 30,000 votes behind Scott's 50.2 percent, with 99 percent of votes in. However, state law requires a recount when candidates are within one-half point of each other.

Mississippi Senate candidates in a special election to replace retired Sen. Thad Cochran will go to a runoff at the end of the month because no one candidate received more than 50 percent of the vote. Republican incumbent Sen. Cindy Hyde-Smith received 41.5 percent of votes and her opponent Democrat Michael Epsy received 40.6 percent. The runoff will take place on Nov. 27.

Additionally, nearly 20 House races in California, New York, Georgia, New Jersey and Washington do not have clear winners.