A campaigner is someone who actively works to promote a cause or candidate. The crossword solutions for the term campaigner include POL (3 letters), which stands for politician; POLITICO (8 letters), which refers to a person involved in politics; CRUSADER (8 letters), which is someone who fights for a cause; LOBBYIST (8 letters), which is someone who attempts to influence public policy; PEROT (5 letters), which is the last name of a businessman and former presidential candidate; MUDSLINGER (10 letters), which is someone who engages in negative campaigning; STASSEN (7 letters), which is the last name of a former governor and presidential candidate; SMEARER (7 letters), which is someone who spreads false information about another person; and ACTIVIST (8 letters), which is someone who campaigns for a social or political cause.