… tie up the outcomes of presidential, house and senate races beyond Jan 20, and have a Dem majority senate (2020 senate race winners unconfirmed) member grab the White House.
"But there would be no House speaker if there were no election, because there would be no House, all of whose members would be up for election in November. The terms of all members of the House would end, as stated in the Constitution, on January 3. There would, however, be a Senate, with a majority of its members not up for election in November and, therefore, still serving their terms. This is important as the next in line would be the president pro tempore of the Senate, which is Charles Grassley. However, if there were no election, there may be a Democratic majority among the remaining senators not up for reelection, unless sitting governors or state legislators were allowed to fill vacant seats, which is another issue.
The longest serving majority senator is traditionally handed the honor of serving as the president pro tempore of the chamber. Among Democrats that would be Patrick Leahy. But a Democratic majority could choose any sitting senator for that role, including Elizabeth Warren and even Bernie Sanders. If the succession law covers a missed election, which would be doubtful, then the senator selected to serve as president pro tem would become the next president. This thought is scary enough to Republicans to assure that they will do everything they can to hold the election."