Mostly the difference in California...In 2016 Calif. was more than the difference.
US.
6212525 difference.
Biden = 80,074,510
POTUS = 73,861,985
Calif.
5100154 difference.
Biden = 11,082,386 = 2,328,594 more than 2016 - is that even possible ? Cheatin in CA too?
POTUS = 5,982,232 = 1.5 million more than 2016
Well of course.