I think polarization across the country is mostly a consequence of too much centralization. The federal government has too much power, so the political parties

I think polarization across the country is mostly a consequence of too much centralization. The federal government has too much power, so the political parties organize themselves in that way. Everything becomes zero sum. If states had more variation, I think you'd see less polarization, because the threat of a federal decision applying to everyone is far less of a worry.