For stephanie ruhle. We are 71 days away from the election. Early voting starts in less than a month in the first mail in ballots will be sent out next week. The conventions are over and the threat to election day is an. One of the biggest days between know when that, the president ial debate scheduled for september 10 on abc. Now, donald trump is threatening to pull out. Here is nbcs Garrett Haake with more. Reporter tonight, the trumpet heres campaigns drooling over the residential debate. This Morning Trump casting doubt about attending and now a new wrinkle. The deal is we keep the same rules and now they want a change in the rules because she cant answer questions. Reporter in the last face off at the bys campaign request, candidates megaphones were muted while the other candidate was speaking to prevent interruption. Now heres campaign is asking for the microphones to be left on at all times. Trumps Campaign Objective but the candidates seeming to acquiesce today while taunting t