Can Trump Postpone the Election? [View all]
"...Now that many states have moved their primaries to May or June, people are starting to ask if Donald Trump could postpone the Nov. 3 election until next year. The short answer, which we've talked about before, is: "No." The long answer, which we've also talked about before, is: "Also no, but with an explanation." First, Election Day is set by federal law. This year it is Nov. 3. It would take an act of Congress to change it, and House Democrats are not going to sign off on a change. Second, the terms of the president and vice president expire at noon on Jan. 20, 2021. Period. No matter what. If no president and vice president have been selected according to law by then, the normal rules of succession kick in. If the House has elected a new Speaker, he or she becomes president. Otherwise, it is the president pro tempore of the Senate.
But the real reason Trump can't postpone the election is that it is not controlled by the federal government. It is controlled by the 50 states and Washington, DC. The only thing that is definite is that the presidential electors will meet in their respective state capitals on Dec. 14 to cast their electoral votes. Beyond that, things get a little fuzzy, since there are 50 different states (plus Washington, DC) with different sets of rules, and different political situations. So, there are a whole bunch of ways this could theoretically play out. However, it's hard to come up with one that produces the result Trump would be looking for, namely short-circuiting the system in order to secure his reelection...."
Source: https://www.electoral-vote.com/evp2020/Pres/Maps/Apr02.html#item-3
I really enjoy Electoral-Vote.com They are very good at explaining how the political processes function.