Democratic Sen. Mark Kelly defeats Republican Blake Masters in Arizona

Incumbent Democratic Sen. Mark Kelly has defeated Republican challenger Blake Masters in Arizona's 2022 U.S. Senate election, according to the Associated Press, which called the race on Friday.

"Thank you to the people of Arizona for re-electing me to the United States Senate. From day one, this campaign has been about the many Arizonans - Democrats, Independents, and Republicans - who believe in working together to tackle the significant challenges we face," Kelly said in a statement. "That's exactly what I've done in my first two years in office and what I will continue to do for as long as I'm there. It's been one of the great honors of my life to serve as Arizona's Senator. I'm humbled by the trust our state has placed in me to continue this work."

Democrats went into the 2022 midterms with control of both chambers of Congress, but as of Friday night, it still remains unclear which party will control the House and Senate next year.

In Georgia, incumbent Democratic Sen. Raphael Warnock and GOP candidate Herschel Walker are heading to a December runoff because neither candidate secured a majority of the general election vote. And in Nevada, the outcome of the Senate race between incumbent Democratic Sen. Catherine Cortez Masto and former state Attorney General Adam Laxalt is still unclear.

Republicans would need to win both of those contests in order to secure the 51-seat majority necessary to gain control of the Senate next year.

The chamber is currently split between 50 Republicans, 48 Democrats, and 2 independents who caucus with the Democrats — Vice President Kamala Harris' role as tie-breaker means that Democrats have the majority.

Multiple Republican lawmakers have called for the postponement of the Senate GOP leadership elections that are slated for next week — but Politico reported that Senate GOP Conference Chair John Barrasso wrote to Republican senators and indicated that the leadership elections will take place on Wednesday, as had been planned.