Primary results 2022: South Carolina, Nevada and more hold elections Tuesday

Voters are casting their ballots in primary elections in four states, setting up some of the most closely-watched and expensive general election matchups in the fall.

Polls have closed in South Carolina, Republican incumbent U.S. Reps. Tom Rice and Nancy Mace are both facing Trump-backed challengers. Rice is one of the six House Republicans who voted to impeach former President Donald Trump and is up for reelection. 

Rice has vehemently defended his impeachment vote, telling Politico recently that "I think that was one of the worst things, if not the worst, that a president has ever done in terms of attacking the Constitution and separation of powers."