well......

just watch him, right?

if he were to delay the election by executive order or presidential proclamation (probably the latter.) at more or less the last minute, then challenge it at every level, he would no doubt be able to delay it for months.

1) the court is going to eventually rule on an election date. who knows when. but, that might be all he wants.
2) i couldn't imagine him winning an election that he delays by executive order, and then has overturned by the courts.

the more pressing issue is how self-identified conservatives are going to react to such a thing, and it would no doubt be pyrrhic, to say the least.

https://www.cbc.ca/news/world/donald-trump-united-states-election-delay-voter-fraud-1.5669270