Battle Heats Up Over How Americans Vote

DES MOINES — President Donald Trump’s campaign and allies have blocked efforts to expand mail-in voting, forcing an awkward confrontation with top GOP election officials who have been promoting the opposite in their states. The rare dissonance between Trump and other Republican elected officials reflects another reality the president will not concede: Many in his party believe expanding mail-in voting could ultimately help him.Trump’s campaign has intervened directly in Ohio, while allies have fired warning shots in Iowa and Georgia, aimed at blunting Republican secretaries of state in places that could be competitive in November.