Problems with vote-counting machines at some polling locations in Maricopa County, home to more than half of Arizona’s voters, became grist for prominent right-wing voices who deny the legitimacy of the 2020 election to claim without evidence that Tuesday’s vote was also fraudulent. Tabulators at about a quarter of the 223 voting locations in the county experienced problems, county officials said. Elections officials were fixing the problems and advised voters to either wait for tabulators to come back online, go to another voting location or to drop ballots in secure slots. Ballots dropped in the slots are counted either at...