Can Trump’s anti-mail-voting crusade hurt him in key states?

President Donald Trump speaks during a news briefing at the White House, Thursday, July 2, 2020, in Washington. (AP Photo/Evan Vucci)

FILE - In this May 28, 2020 file photo, Dave Turnier processes mail-in ballots at at the Chester County Voter Services office in West Chester, Pa., prior to the primary election. President Donald Trump’s campaign and allies have blocked efforts to expand mail-in voting, forcing an awkward confrontation with top GOP election officials promoting the opposite in their states. The rare dissonance between Trump and other Republican elected officials also reflects another reality that the president will not concede: Many in his party believe expanding mail-in voting could ultimately help him. (AP Photo/Matt Rourke)

DES MOINES, Iowa — President Donald Trump’s campaign and allies blocked efforts to expand mail-in voting, forcing an awkward confrontation with top GOP election officials who are promoting the opposite in their states.