Tuesday’s Arizona GOP primary will determine the party’s candidate for governor. Five Republicans are competing for the nomination. Rep. Andy Biggs runs again this year. Trump-backed candidates oppose his bid. The election fight in 2020 is the central issue. Some Republican leaders continue to doubt the vote counts. Polls closed at 9 p.m. local time. Latino voters could tip the balance. Experts anticipate a close finish. No single leader was ahead at the start of the vote.