In the final weeks of a divisive, high-stakes campaign season, state election officials in political battleground states say they are bracing for the unpredictable and emergent threat posed by artificial intelligence, or AI. "The number one concern we have on Election Day are some of the challenges that we have yet to face," Arizona Secretary of State Adrian Fontes said. "There are some uncertainties, particularly with generative artificial intelligence and the ways that those might be used."...