With a dozen races still to be called, the G.O.P. was two seats away from the 218 that would allow the party to claim a coveted governing trifecta: control of the House, Senate and White House.

Republican Rep. Juan Ciscomani won reelection to a U.S. House seat in southeastern Arizona in a rematch that pitted him against the Democrat he narrowly beat two years ago. Ciscomani defeated Democrat Kirsten Engel in the race for Arizona’s 6th Congressional District,

Republicans won control of the House of Representatives on Wednesday, according to a projection by the Associated Press, handing the party a sweep and ushering in a new era in Washington. With the presidency,