Libertarians prefer proportional representation

Any party that doesn't support pr and replacing fptp (where it exists) with pr is not a Libertarian party... or is stupid. Libertarians realise that if there is a government then the only thing to constrain it will be democracy. Libertarians realise that (unless anarchy is the alternative) democracy protects the individual and provides freedom. This means that all Libertarians prefer pr to fptp. To be a supporter of fptp is to be a socialist or a communist. All Libertarians support pr over fptp.