Four states hold primaries Tuesday: Alabama, Arkansas, Georgia and Texas, where there are runoff races following an election on March 1.
In Georgia, former President Donald Trump has endorsed a slew of Republican candidates, including challengers to Gov. Brian Kemp and Secretary of State Brad Raffensperger. And Trump's pick for U.S. Senate, Herschel Walker, will face Sen. Raphael Warnock in a high-profile general election matchup.
