The McGovern–Fraser Commission, formally known as Commission on Party Structure and Delegate Selection, was a commission created by the Democratic National Committee (DNC) in response to the tumultuous 1968 Democratic National Convention. It was composed of 28 members, selected by DNC chairman Senator Fred R. Harris in 1969 to rewrite the Democratic Party's rules regarding the selection of national convention delegates. Senator George McGovern and later Representative Donald M. Fraser led the commission, which is how it received its name. McGovern, who resigned from the commission in 1971 in order to run for president, won the first nomination decided under the new rules in 1972, but lost the general election to Richard Nixon.