I think this also assumes that the 2 major parties have coherent, consistent ideologies. On the contrary, it seems to me that each of them are fairly diverse co

I think this also assumes that the 2 major parties have coherent, consistent ideologies. On the contrary, it seems to me that each of them are fairly diverse coalitions with not a small number of fierce internal disagreements, who are forced to come together because of a winner-take-all, first-past-the-post electoral system. What if there are millions of sides?