The G.O.P. is picking a nominee to challenge the state’s Democratic incumbent governor, Katie Hobbs, and a Republican congressional race is upended by allegations of sexual impropriety.

These crucial congressional primary races in Arizona could provide clues about whether Republicans maintain their slim majority in the U.S. House.

WASHINGTON (AP) — Arizona Republicans will choose a nominee in a state primary Tuesday to challenge Democratic Gov. Katie Hobbs in November. Voters across the state will also set…