Probably after we switch from a First-past-the-post voting system to something more representative.
Then people could vote outside the two party system without a spoiler effect.
We can make these changes at the state level. Alaska recently voted to keep using Ranked Choice voting. Conservatives were mad because Ranked Choice voting allowed alaskans to choose a more moderate conservative over Sarah Palin and pushed to have a referendum to go back to FPTP voting.
So why do Blue states use FPTP voting when it's clear republicans prefer it?
I dont think FPTP is a problem, my country also have FPTP but we have diverse range of parties having significant influence.
Electoral college is the real issue
When people on the left stop just circle-jerking on the Internet and actually get involved in their state and local Democratic parties, vote in the primaries and run for office.
We've got 4 years (assuming something doesn't happen) to create a resistance party and get a candidate with enough charisma and followers to win an election.