Actually, the presidential election isn’t all that puzzling: Biden cheated. From Patrick Basham at spectator.us via zerohedge.com:
If only cranks find the tabulations strange, put me down as a crank

First, consider some facts.
President Trump received more votes than any previous incumbent seeking reelection. He got 11 million more votes than in 2016, the third largest rise in support ever for an incumbent. By way of comparison, President Obama was comfortably reelected in 2012 with 3.5 million fewer votes than he received in 2008.
Trump’s vote increased so much because, according to exit polls, he performed far better with many key demographic groups. Ninety-five percent of Republicans voted for him. He did extraordinarily well with rural male working-class whites.
He earned the highest share of all minority votes for a Republican since 1960. Trump grew his support among black voters by 50 percent over 2016. Nationally, Joe Biden’s black support fell well below 90 percent, the level below which Democratic presidential candidates usually lose.
Trump increased his share of the national Hispanic vote to 35 percent. With 60 percent or less of the national Hispanic vote, it is arithmetically impossible for a Democratic presidential candidate to win Florida, Arizona, Nevada, and New Mexico. Bellwether states swung further in Trump’s direction than in 2016. Florida, Ohio and Iowa each defied America’s media polls with huge wins for Trump. Since 1852, only Richard Nixon has lost the electoral college after winning this trio, and that 1960 defeat to John F. Kennedy is still the subject of great suspicion.