Tuesday’s Arizona GOP primary will determine the party’s candidate for governor. Five Republicans are on the ballot. Rep. Andy Biggs runs again this year. Trump-backed candidates stand against him. The election fight in 2020 is the dominant theme. Some Republican leaders remain skeptical of the vote counts. Polls closed at 9 p.m. local time. Latino voters could shift the race. Experts predict a close finish. No single leader was ahead at the start of the vote.