I once read an interesting article that said in multipolar political systems, coalitions between opinion groups happen after the election; whereas in two-party systems, the coalition forms before the election.

So you get people who think taxation is theft allied with people who Back The Blue. You get people who think life is so sacred abortion should be banned allied with people who'd like to see an AR-15 under every pillow. You get people who think nazi flags and the N word are free speech, allied with people who think books with gay and trans characters should be banned.

And personally I'm pro-environment and think nuclear power has a part to play; I think we should help the homeless by increasing the housing supply and letting builders do their thing; that the police should exist but need substantial reform to stamp out corruption and brutality; and that women's issues like abortion and trans women in abuse shelters should be decided by women, not men like me. But I'm in a political coalition with people who think nuclear power is bad, that we need rent control, that we should defund the police, and so on.

In an electoral system with proportional representation, largely unrelated views would all be different parties, no party would have a majority, and after the election they'd form alliances to build a ruling coalition.

But because of America's electoral system, someone has to take all those views, duct-tape them together and call it a consistent political ideology.