As a member of the Illinois House , he was a close ally of Chicago Mayor Richard J. Daley . Despite this , in 1969 , he led a revolt of downstate Democrats against a plan to implement a 3 % income tax instead of Choate 's preferred plan of a 4 % rate for corporations and a 2.5 % rate for individuals . He served in a variety of party leadership positions including minority whip ( 1957-1960 ) , 69th and 70th ; majority whip ( 1961-1964 ) , majority leader ( 1965-1966 ) , minority whip ( 1967-1970 ) and minority leader ( 1971-1974 ) . In 1972 , he served as chairman of the Illinois delegation to 1972 Democratic National Convention
1972 Democratic National Convention
1972 Democratic National Convention
Clyde L. Choate