Him changing the cultural politics of the party by just raw material conditions would be :chefs-kiss:. Imagine the total meltdown capitalists would have if he by some miracle got the nom inside the Republican party. The Democrats would be scrambling to crush any leftism inside their party and shore up conservative voters. It wouldn't be enough. The Democrats would have to go mask off, and still lose.

If Bernie ever got the nom under any circumstance I would assume he would win. But even if he did, his problem would be inside coup attempts and assassination. In the end though, he just was never mean enough, or driven enough to do anything ballsy like running as a Republican. Let alone using his position to seize power for the left. He would have to essentially kill his rivals once in power and he wouldn't do it.