Does that actually work? How did Trump winning in 2016 help your average Green Party supporter?
If anything, didn't Biden win by a larger margin against Bernie in 2020 than Hillary won against Bernie in 2016?
If anything, didn't Biden win by a larger margin against Bernie in 2020 than Hillary won against Bernie in 2016?
Or put more simply: his personal standing within the party was threatened more than his party's electoral chances (UKIP votes were irrelevant in most Tory seats and took votes off Labour too in marginals), and he wouldn't have been in power anyway under a proportional system.
Ironically, EU Parliament votes being proportional probably played a major role in Farage deciding back in the nineties that he could try to win the Brexit debate from outside the Tory party too...