Ever since not-President Biden declared that he got 80 million votes to Trump's 74 million+, we've been wondering how almost HALF of the US' population could be eligible to vote. As it turns out, that's not the issue; about 63% of Wisconsin's population is registered to vote. (Not good demographically, by the way.)
But there's another math problem that arose.
...If we have 213.8 million registered voters in the US and 66.2% of all voters voted in the 2020 election, that equals 141.5 million voters who voted in the 2020 election (Binney shows 140 million which is materially the same).
If President Trump won 74 million votes, then that leaves only 67.5 million votes remaining for Biden. This means 13 million duplicate or made up ballots were created and counted for Biden!...
No doubt the WaPo has Teh Science!! on this question.