Over the next four years, a commission on party structure and delegate selection, with Sen. George McGovern as chairman, introduced a series of reforms ensuring that, culturally as well as politically, the delegates to the 1972 Democratic convention would resemble the young activists who had battled the police in Chicago more than delegates who had been seated inside. The McGovern Commission, as it came to be called, established state primaries that, in effect, abolished the power of the old city and state bosses, most of whom came from white ethnic stock. The commission also established an informal quota system for state delegations to assure greater representation of racial minorities, youths and women that by 1980 became a mandate that half of every state delegation must be women.