Actually, hold on, jump out, meta-level question: why are you privileging the hypothesis that "voting with their feet" represents a reflectively-coherent all-else-equal preference anyway?
Well, for one thing "voting with one's feet" doesn't have the rational ignorance problem that voting does.
Which is not evidence regarding migration as a preference indicator. You're playing politics, not rationality.
In the big survey, political views are divided into large categories so that statistics are possible. This article is an attempt to supply a text field so that we can get a little better view of the range of beliefs.
My political views aren't adequately expressed by "libertarian". I call myself a liberal-flavored libertarian, by which I mean that I want the government to hurt people less. The possibility that the government is giving too much to poor people is low on my list of concerns. I also believe that harm-causing processes should be shut down before support systems
So, what political beliefs do you have that don't match the usual meaning of your preferred label?