Under the reform package , a 21-member unity commission , chaired by Clinton supporter Jennifer O'Malley Dillon and vice-chaired by Sanders supporter Larry Cohen , was appointed after the 2016 general election . The commission 's recommendations would be voted on at the next Democratic National Committee meeting , well before the beginning of the 2020 Democratic primaries . The commission was to consider " a mix of Clinton and Sanders ideas " : expanding the ability of eligible voters to participate in caucuses ( an idea supported by Clinton ) and expanding the ability of unaffiliated or new voters to join the Democratic Party and vote in Democratic primaries via same-day registration and re-registration ( an idea supported by Sanders ) . The commission drew comparisons to the McGovern – Fraser Commission , which established party primary reforms before the 1972 Democratic National Convention
1972 Democratic National Convention
1972 Democratic National Convention
Superdelegate