AdvertisementDNC Officials Vote To Scale Back Role Of 'Superdelegates' In Presidential NominationJune 27, 2018Scott DetrowfacebookEmailSen. Bernie Sanders is seen after the Vermont delegation cast their votes during roll call at the 2016 Democratic National Convention in Philadelphia. After the bitter primary between Sanders and Hillary Clinton, the DNC set up a process that has led to reducing the role of party leaders in selecting the presidential nominee. (Getty Images)