Republican Rep. Juan Ciscomani has won reelection to a U.S. House seat in southeastern Arizona. With his win, Republicans have enough seats to control the U.S. House.

Two vulnerable Republicans held onto their seats as a "red wave" election boosted the GOP up and down the ballot.

Arizona House Republicans opted for a veteran lawmaker to lead their caucus for the next two years over a member of the Freedom Caucus and the second-in-command of their current leadership team. Why it matters: The House speaker and Senate president control key committee appointments,