mug·wump 
(mŭgwŭmp′)
(mŭgwŭmp′)n.
1. A person who acts independently or remains neutral, especially in politics.
2. often Mugwump A Republican who bolted the party in 1884, refusing to support presidential candidate James G. Blaine.
[Massachusett mugguomp, mummugguomp, war leader.]
mugwump′er·y n.