Georgia will hold a runoff on December 4, Tuesday, for Secretary of State, and one Public Service Commission seat. This is because no one got 50% on November 6 for those two offices.
Louisiana will hold a runoff on December 8, Saturday, for Secretary of State, for the same reason. Normally this office would not have been up in an even year, but this is a special election to fill a vacancy.
Mississippi will hold a runoff on November 27, Tuesday, for U.S. Senate, short term. No one got a majority on November 6. Because this is a special election, instead of a regular election, it is a non-partisan election, without party nominees.