The Free Market Party
People agree to do business with party members when and where viable, ideally with full liability in case of accidents or incompetence, and with private mediation instead of gov't courts in case of conflict.
Those running for election get bonded (i.e. insured, see below) and agree not to lobby for non-libertarian groups after retirement. Votes are dictated by libertarian principles, either abstaining from voting or polling the FMP for direction when they aren't sure what these principles dictate. Failure to vote correctly results in forfeiture of the bond, with proceeds going to party members.
If party members happen to get wealthy by avoiding some of the more ridiculous taxes and regulations the feds with to apply, so much the better.