The Chicago mayoral election of 1977 was a special election held on June 7, 1977 to complete the remainder of the unexpired mayoral term of Richard J. Daley who died of a heart attack in December 1976. The election saw the election of Chicago, Illinois' first interim mayor, Democrat and 11th ward alderman Michael A. Bilandic. Bliandic defeated Republican Dennis H. Block by a landslide 56% margin.