Here’s the problem: Trump is out to maximize environmental damage and the US Green Party runs as spoilers. Let’s look at three scenarios:
Scenario 1:
Harris: 1001 votes
Trump: 1000 votes
Stein: 0 votes
Harris wins
Scenario 2:
Harris: 1000 votes
Trump: 1000 votes
Stein: 1 vote
Tied vote, which goes to the courts and Congress, putting Trump in power
Scenario 3:
Harris: 999 votes
Trump: 1000 votes
Stein: 2 votes
Trump wins outright
This spoiler effect makes it really imperative to actively vote for Harris if you want to see any kind of climate action going forward. Republicans know this, which is why they’re the ones funding the Green Party.
And that’s why the European Greens want Jill Stein to step down now — they get that what she’s doing is making it easier to elect a fascist bent on environmental destruction.
You could do something like that, and run local and legislative candidates in states like Alaska and Maine which have ranked-choice voting for their general election, or California which uses top-two primaries. Would probably be easier if there was some way to redirect the existing US Green Party towards a path that might actually gain some amount of power, instead of serving as a spoiler.