EDIT: I should clarify, by Jill Stein, I mean what her party’s official platform and policies are on paper, aka, the reason people likely fall for her honeypot (I dont think they necessarily know or believe she’s a Russian asset and vote for her on such a basis)
You may as well ask, what would happen if the Democratic party were a different party?
The DNC pulled out all the stops to keep Sanders from the general election, twice. They can absolutely win elections, when they want to block any movement toward the left.
I recommend listening to this: Why the Democratic Party CANNOT and WILL NOT be Reformed