The Chicago mayoral election of 1975 was held on April 1, 1975. Democratic Party incumbent Richard J. Daley was elected to a record sixth term as mayor by a landslide 59% margin over Republican nominee John J. Hoellen Jr. Only one other individual (Daley's son Richard M. Daley) has since matched Daley's feat of winning six Chicago mayoral elections. This was the first Chicago mayoral election since the ratification of the Twenty-sixth Amendment to the United States Constitution, which lowered the voting age from 21 to 18.