D Cine, I think the President is right to explore if any cheating went on. We know with the number of mail in ballots there was a possibility that some people would take advantage of this. When you see poll watchers being denied access to counting there is obviously something to hide.
However there will not be enough substantial proof to turn over the decision.
Also keep in mind that so farTrump followers have kept protest peaceful. If this was taken away from liberals you can count on the screaming, vagina hats coming out in force and burning and looting will kick off a major fight in our nation.