Yet on a recent evening at his Mar-a-Lago resort, there was Mr. Trump showcasing his latest election conspiracy theory, one he has been advancing for months at rallies for his favored midterm candidates.
The basic pitch is that an army of left-wing operatives stuffed drop boxes with absentee ballots — a new spin on an old allegation that voter-fraud activists call “ballot trafficking.” And while MAGA-world luminaries like Rudolph W. Giuliani, Representative Marjorie Taylor Greene and the MyPillow founder Mike Lindell filled the gilded ballroom, the former president called out two lesser-known figures sitting up front — the stars of “2000 Mules,” a documentary film promoting that ballot-trafficking theory and premiering at Mar-a-Lago that night.