The installation of Louis DeJoy as postmaster general has caused alarm. Since taking up the role in June, he has enacted a number of cuts to the Postal Service: ending overtime for workers, limiting how many runs they can make in a day, reassigning more than 20 executives and, from the perspective of the unions, speeding up the removal of mail-sorting machines. The actions of Mr. DeJoy, a Republican megadonor and Trump ally, have been interpreted by many Democrats as an attempt to sabotage the election in concert with President Trump, who has himself admitted to wanting to limit funding that could help mail-in voting. Today, we explore to what extent Mr. Trump is using the post office, and the postmaster general, to influence the election. Guest: Luke Broadwater, a congressional reporter at The New York Times.  For more information on today’s episode, visit nytimes.com/thedaily  Background reading: Postmaster General DeJoy has ushered in measures that, three months out from an...