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Even though the U.S. election may be settled next month, the balance of power in the Senate could still be up in the air until January - thanks to an unusual confluence of events in Georgia.

Two Senate seats in the state are both up for grabs.

What's the issue? If no candidate wins 50% of the vote in Georgia, state law forces a run-off election on January 5 - that's two days after the rest of Congress is sworn in.

And the chances of a run-off for both seats are relatively high.

Republican Senator David Perdue is up for re-election - pitting him in a tight battle against Democrat Jon Ossoff, an investigative journalist and media executive.

Neither Perdue or Ossoff have reached the 50% mark in polling since July, and recent data shows the race within a single percentage point.

Republican senator Kelly Loeffler is also in the hot seat.

Her spot is subject to what's called a "jungle primary" contest.

That means all candidates can compete, regardless of party.

The sheer number of people in the running makes it unlikely that anyone will get a straight majority of 50%.

Republicans currently hold 53 of the 100 seats in the Senate but about 10 races are considered competitive this year.

Analysts say the most likely outcome of these races is a 50-50 split, which means Georgia -- could be the decider months later.