leftwinger
/ˈlɛftˌwɪŋər/Definitions
1. noun
A person who holds a political position of the left, especially in a political party.
“The leftwinger’s speech sparked a heated debate among the party members.”
2. noun
A member of a sports team who plays on the left side, especially in hockey or ice hockey.
“The leftwinger scored the winning goal in the championship game.”