If US Politics is so polarized, why not just get rid of Democrats and Republicans. And make voting based on what party you support?
Example
Left wing
- Labour Party (Social Democrat)
- Green Party "Which exists but has little to nothing because 2 big parties already is a thing"
- Left Party
Center
- Libertarian party
Right wing
- Right party
- Anti Immigration party
- Religious party
Just some suggestion here? You'll even the votes, your vote would matter. Problem solved.