Yougov measures (using sample and weighting to create something they claim to be representative) which countries Americans think are socialist. It may seem like an odd thing to measure, but the results are rather interesting:
Three thoughts:
  1. It is remarkable how the reputation of e.g. Sweden and Denmark lags compared to the actual development.
  2. Compared to democrats, Republicans seem to be much more correct in their ranking of countries .
  3. Democrats seem to confuse socialist countries with countries they like, which suggests they see socialism as something good - while the opposite seems to be the case for republicans.