Meaning of the word campaigner in English

What does campaigner mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

campaigner

US /ˌkæmˈpeɪ.nɚ/
UK /ˌkæmˈpeɪ.nər/

Noun

a person who actively promotes or fights for a cause, idea, or political candidate

Example:
She is a passionate campaigner for environmental protection.
The political campaigner worked tirelessly to get his candidate elected.