Trump suggests postponing the election. Obviously this is not consistent with his stated belief that he’s actually ahead in the polls.
Even if he had the power to do that (he does not), it would not work out as he planned. His term of office expires in January, whether there is an election or not. That is also true of the House and 1/3 of the Senate.
The Constitution reads, “The terms of the President and the Vice President shall end at noon on the 20th day of January.”
On January 20, with no President or Vice-President or Speaker of the House, the Chief Justice would swear in the Senate’s President Pro Tempore as the next President of the United States. Since the Senate would, at that time, have 35 Democrats and 30 Republicans, and since the position is elected by the Senate, the President would be a Democrat. By custom, the Senate has elected the longest-standing member of the majority party to the post, but that is not a legal or constitutional requirement. Given the unique hypothetical scenario, the most likely choices would be Elizabeth Warren and Kamala Harris. (Bernie is not well liked and is only kinda-sorta a Democrat, while Cory Booker would not be eligible since his term would have expired in this theoretical scenario.)
So even if Trump did manage to delay the election, he would most likely have the humiliating experience of watching the inauguration of his arch-enemy, President Pocahontas. (Or perhaps worse in his eyes, a woman of color!) Of course, they would only be able to hold office until the actual election is conducted, at which time the winner would be inaugurated.
I might also note that I don’t think either of those women would be particularly lenient in the pardon department when Trump is eventually sentenced for his crimes. I think they would not hesitate to ship him off to the calaboose. He’d be much better off taking his chances with President Joe Biden, who is a soft-hearted cuss.
NOTE #1: in some states the governor may appoint a replacement senator in the case of a vacancy. Therefore, the GOP might be able to hold on to the Senate, depending on the appointments between Jan 3 and Jan 20, in which case the new President of the USA would be the Republican President Pro Tempore of the Senate. Heaven only knows who they would choose.
NOTE #2: Various scholars argue that the states can proceed with House and Senate elections even if there is no Presidential option. In that case, the Speaker of the House of Representatives could become President. The House is under no legal or constitutional obligation to choose a member as its Speaker, so the temporary President of the USA could literally turn out to be anyone. It might be Pelosi, but it could even be Crooked Hillary! (If I were in the House, I might consider trying to get the body to elect James Comey as its Speaker! But that’s just me.)