It has happened once when the Republican Party supplanted the Whig party, right before the civil war; but I doubt that could happen again with the “advances” of media, polling, and propaganda (and if Trump wins, I doubt the U.S. will have fair elections again). There’s no other “big tent” party like the Democratic party; so a left-leaning third party could only just siphon off a fraction of the votes from the Democratic Party, ensuring Republican victory. We have two-party rule because when people act rationally in FPTP electoral systems, that’s what happens (https://en.wikipedia.org/wiki/Duverger’s_law).
Though, I’d argue that MAGA supplanted the Republican party from within. That seems like the most viable option for progressives (supplanting the Democratic party from within).
That’s not realistic under current conditions. https://www.youtube.com/watch?v=s7tWHJfhiyo
It has happened once when the Republican Party supplanted the Whig party, right before the civil war; but I doubt that could happen again with the “advances” of media, polling, and propaganda (and if Trump wins, I doubt the U.S. will have fair elections again). There’s no other “big tent” party like the Democratic party; so a left-leaning third party could only just siphon off a fraction of the votes from the Democratic Party, ensuring Republican victory. We have two-party rule because when people act rationally in FPTP electoral systems, that’s what happens (https://en.wikipedia.org/wiki/Duverger’s_law).
Though, I’d argue that MAGA supplanted the Republican party from within. That seems like the most viable option for progressives (supplanting the Democratic party from within).