There are fifteen different political parties represented in the Danish parliament (plus some independent candidates) the largest of which (Social Democrats) ho

There are fifteen different political parties represented in the Danish parliament (plus some independent candidates) the largest of which (Social Democrats) holds 49 of 179 seats (27%). To get a majority for their government, they formed a coalition with six other parties. https://en.wikipedia.org/wiki/Folketing https://en.wikipedia.org/wiki/Folketing Evidently, Denmark is incredibly heterogeneous politically. Meanwhile, the US has only two political parties represented in the national legislature, so much more homogeneous. And yet the US doesn't have a reputation of adopting socialist practices. I think your theory needs some work.