Not sure why you're being downvoted, it's an interesting thought experiment.

Here's a video talking about what might happen. Basically, if there were no election, all that would be left is 2/3 of the Senate:

https://www.youtube.com/watch?v=yQLbNekBU1A

Let's be realistic - the election happens regardless of what the President wants.

For obvious reasons, he does not control the election.

...but for the sake of argument, if a comet hit the Earth and cancelled the election, then the terms of both the President and the Vice President would end, and the Leader of the Senate would become the President.

The supreme court decision after the Florida hanging chads debacle established that timeliness is more important than accuracy. So that's one possible playbook: dispute certain results (aka mail in ballots) and use the timeliness argument to get a decision without counting the disputed results.

Likely the vacancy clause would kick in and the Speaker of the House becomes President. The office won't be left empty.