Biden may indeed be a lucky man; if you ask him, he’ll probably agree with that. Given his narrow margins in a number of swing states in November, a few minor differences over the course of the campaign could have meant a different outcome. On the other hand, the elevated turnout Biden received from Democrats across the board came in part because the party had settled on him very early in the process for the specific purpose of defeating Trump. Biden may have gotten some good breaks, but the more his party backed him, the luckier he got.

-Seth Masket in the WaPost