Tuesday’s Arizona GOP primary decides the party’s candidate for governor. Five Republicans are competing for the nomination. Rep. Andy Biggs runs again this year. Trump-backed candidates are challenging him. The election fight in 2020 is the dominant theme. Some Republican leaders still question the vote counts. Polls closed at 9 p.m. local time. Latino voters could tip the balance. Experts predict a close finish. No single leader held a clear lead before the vote.