The Latest: Harris and Walz hold rally in Arizona, while Trump visits Montana

Vice President Kamala Harris and her new running mate held a rally in Arizona as part of their tour of electoral battlegrounds, visiting a state where Harris passed over a prominent Democrat in favor of Minnesota Gov. Tim Walz. Arizona Sen. Mark Kelly, a former astronaut and gun control advocate, had been a top contender for running mate.

Meanwhile, former President Donald Trump is visiting Montana for a rally in support of Republican Senate candidate Tim Sheehy. The former president hopes to remedy some unfinished business from 2018...