At the 1968 Democratic National Convention , Hughes was giving a nominating speech for anti-war candidate Eugene McCarthy when violent demonstrations erupted on the streets of Chicago . Hughes , a heavy favorite , defeated Republican David Stanley , a Muscatine , Iowa state senator , by only 4200 votes for the U.S. Senate seat being vacated by Republican Bourke Hickenlooper of Cedar Rapids
1968 Democratic National Convention
1968 Democratic National Convention
Harold Hughes