Question: The American bluegrass and country rock band "Mission Mountain Wood Band" had this American singer, instrumentalist (playing guitar and banjo), songwriter, and politician as original member who was involved with what political party?
Sentence (from "Mission Mountain Wood Band"): The Mission Mountain Wood Band, abbreviated M2WB, is an American bluegrass and country rock band formed in Missoula, Montana, US in 1971.
Relevant evidence: Yes