mugwump

Mugwump
    n 1: someone who bolted from the Republican Party during the
         U.S. presidential election of 1884
    2: a neutral or uncommitted person (especially in politics)
       [syn: {mugwump}, {independent}, {fencesitter}]
    

mugwump \mug"wump`\, n. [Cf. Algonquin mugquomp a chief.]
   1. A bolter from the Republican party in the national
      election of 1884; an Independent. [Political Cant, U.S.]
      [1913 Webster]

   2. A person who is undecided about an issue, especially a
      political one; a person who takes a neutral stance on an
      issue; a fence-sitter.
      [PJC] Mugwumpery
    

MUGWUMP, n.  In politics one afflicted with self-respect and addicted
to the vice of independence.  A term of contempt.
    

79 Moby Thesaurus words for "mugwump":
      Fabian policy, Micawberism, Milquetoast, anythingarian, apostate,
      backslider, backwardness, big boy, big chief, big shot, bigwig,
      bolter, collaborationist, collaborator, convert, defector,
      deserter, dilatoriness, fence-sitter, fifth columnist, free lance,
      free spirit, free trader, freethinker, heavyweight, hesitation,
      high-muck-a-muck, hold-off, independent, individualist,
      isolationist, jellyfish, latitudinarian, laxness, leader, liberal,
      libertarian, libertine, lion, nabob, neuter, neutral, nonpartisan,
      nothingarian, procrastination, proselyte, quisling, recidivist,
      recreant, remissness, renegade, renegado, renegate, reversionist,
      rugged individualist, runagate, schismatic, seceder, secessionist,
      separatist, shilly-shally, slackness, slowness, stall,
      strikebreaker, swing vote, temporization, tergiversant,
      tergiversator, third force, third world, traitor, turnabout,
      turncoat, turntail, uncommitted voter, waverer, weakling,
      wobbler