Nearly all libertarians were once conservatives or progressives or independent statists of some stripe. But scarcely any conservatives, progressives, or independent statists were once libertarians. This asymmetry in the direction of ideological migration is interesting and perhaps informative.
Robert Higgs
anarcho-capitalism, anarchy, ancap, change, evolution, freedom, knowledge, libertarian, liberty, non-aggression-principle, politics, society, voluntaryism