There probably are, but with a First Past The Post / Winner Takes All system, it's really hard to get it introduced. Politically, one would require a majority

There probably are, but with a First Past The Post / Winner Takes All system, it's really hard to get it introduced. Politically, one would require a majority of voters in BOTH parties to want socialized healthcare, due to the division of powers, gerrymandering, the broken presidential election system, and so on. You could have 70% of the population being pro-socialized healthcare, but if the majority of those rest in one party and in certain regions, there still wouldn't be enough to get the majority in the house AND senate. If other things are more important, voters might even be for it, but not even show up to the polls or vote for candidates that are all about that issue, because some other, bigger issue (in the eyes of the voters) needs to be addressed. Climate change is a good example in Europe. Depending on country, you can get the majority of people who say they care about it, but come election time they will: - vote for a populist party that doesn't give two farts about it - vote for the old, "stable" option that is closer to their core values but never actually does anything about climate change - decide not to vote at all for whatever reason The minority actually votes for a green party. That might slowly be changing, but change doesn't come quickly from within unless forced (COVID being a good example).