Boosted in part by two pivotal Arizona races, Republicans have won a majority in the U.S. House of Representatives, helping to cement total GOP control over the federal government’s elected bodies.

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,

Republican U.S. Rep. Juan Ciscomani appears headed toward a second term representing Arizona's 6th Congressional District after his Democratic opponent Kirsten Engel conceded on Wednesday, though the AP has yet to call the race.

Incumbent U.S. Rep. Juan Ciscomani defeated Democratic challenger Kirsten Engel in Arizona’s Tucson-area 6th Congressional District, a pivotal seat that helps lock in a Republican majority in the House of Representatives.

Juan Ciscomani has maintained his seat in the U.S. House of Representatives, representing Arizona’s Congressional District 6. He narrowly defeated his Democratic opponent Kirsten Engel by 6,867 votes with 99% of precincts reporting,