I think instead what will happen is that SCOTUS will invalidate some of the states elections due to rampant fraud so that theres no way either candidate can get to 270 then it goes to the house based on this info in the Atlantic article.
https://www.theatlantic.com/ideas/archive/2019/07/what-happens-if-2020-election-tie/593608/
What Happens If the 2020 Election Is a Tie?
The House of Representatives resolves inconclusive presidential electionsand while Democrats may hold most of the seats, Republicans control more state delegations.
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That raises questions. If the election for a state is invalidated, that also invalidates the house and senate races in those states, doesn’t it. At least that’s what I think I read somewhere.
So theoretically, that would mean that the House on Jan 3 would be constituted differently than we have been thinking?
I’ve been reading that the SOS of the various states can’t certify just part of the election - It’s all or nothing?
Races don't matter, there are 50 votes in that case. 1/state.
If a state is taken out of the election the 270 is no longer the magic number. The new magic number would be half of the new total of all electoral votes. So 536 less the state electoral votes that got disqualified. E.g. Pa gets disqualified with its 20 electoral votes. So the total electoral count goes to 516. So to win, a candidate must have half of 516 plus one: 259.