if they pull some commie shit and bomb the polling places on election day in states where they have a big lead because of early voting then yes, we will have problems

also if all the court case start going against trump in the appeals process, specifically regarding how long states can count absentee ballots and if they need signatures and postmarks to be counted

otherwise the turnout on election day for trump "should" be massive, by all the metrics that have mattered in the past he is winning big (stock market, voter enthusiasm, registration drives in swing states, online viewership, ground game, etc)