Tuesday’s Arizona GOP primary settles 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 continue to doubt the vote counts. Polls closed at 9 p.m. local time. Latino voters could tip the balance. Experts foresee a close finish. No single leader held a clear lead before the vote.