D defs.my
Entry 2 senses Webster, 1913

mugwump

· mug·wump · IPA /ˈmʌɡˌwʌmp/
01 n. A bolter from the Republican party in the national election of 1884; an Independent.
  1. 1.
    A bolter from the Republican party in the national election of 1884; an Independent.[Political Cant, U.S.]
  2. 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.