Mruk won the 1949 mayoral election against the Democratic nominee, Chief City Judge Joseph Hillery and two other candidates. His campaign was buoyed by Polish-Americans who usually voted for Democrats, but were unhappy that the Soviet Union had in fact made Poland part of the Eastern Bloc following World War II.
Mruk won the 1949 mayoral election against the Democratic nominee, Chief City Judge Joseph Hillery and two other candidates. His campaign was supported by Polish-Americans who typically voted for Democrats but were dissatisfied with the Soviet Union's decision to incorporate Poland into the Eastern Bloc following World War II.