President Trump tweeted the possibility of delaying the US general elections. He doesn't have the ability to delay the election on his own. Here's what the Constitution says on the matter:
The Times, Places and Manner of holding Elections for Senators and Representatives, shall be prescribed in each State by the Legislature thereof; but the Congress may at any time by Law make or alter such Regulations, except as to the Places of chusing Senators.
Imagine that the election somehow were delayed past the inauguration date. The President's term (and the term of the Vice President and the entire Cabinet) end on January 20 no matter what. Under the order of succession, the next person to become president would be the Speaker of the House. But her term also ends in January (EDITED).
There are a few things I don't understand in this situation. Would California be able to hold an election even if other elections were delayed? Would the governor of California appoint a replacement (or reappoint Speaker Pelosi)? Could the House change the rules to allow the speakership to continue after the election?