There are a lot of reasons that elected politicians don’t support the positions of most voters, one being that turnout of the voting-age population in the US tends to be just over 50% (with 2020 being an outlier). But I think we’re getting too deep into the analogy here. The point is that a democratically elected government is absolutely capable of making decisions opposed by a majority of its citizens.

In the USA it is well known that popular opinion has little effect on policy. The last time a popular legislation got through was the affordable care act more then 10 years ago, and even that was only a half step in the direction that people wanted (universal healthcare).

Knowing that there is little incentive for USA voters to actually vote for a candidate based on policy. Instead you pick the person you hate less.