Despite being a terribly weak candidate and losing recent primary after recent primary, Hillary Clinton will most likely win the Democrat nomination. That’s opening a deep rift in the party. On Tuesday, Democrats in Kentucky and Oregon headed to the polls. Sanders won Oregon by a nine-point margin — less than expected, but still a win for the socialist candidate. Meanwhile, Bluegrass Country was supposed to be Clinton Country but at the end of the day, Clinton held a razor-thin 1,900-vote lead over Sanders. Just to show how weak Candidate Clinton has become, remember Clinton won Kentucky by 35% over Barack Obama in the 2008 primary.

Clinton would like nothing better than to unite the party behind her and enter the general election fight with her fellow repugnant New Yorker. But Sanders’ supporters are angry over the party rules that ensure favorites like Clinton get the nomination. Clinton is close to clinching the nomination because superdelegates — party elites — support her. Some Sanders supporters are so angry that they erupted into violence at Saturday’s Nevada Democratic Convention and sent death threats to Nevada’s state party chairwoman.

When Democrat leaders like Harry Reid and Debbie Wassermann-Shultz told Sanders to control and apologize for his supporters, Sanders fired back. During a California campaign stop this week, Sanders said, “The Democratic Party is going to have to make a very profound and important decision. It can do the right thing and open its doors and welcome into the party people who are prepared to fight for real economic and social change. … Or the other option for the Democratic Party, which is a sad and tragic option, is to choose to maintain its status quo structure.”

After the violence over the weekend, the Nevada State Democratic Party warned that the national convention may become violent as Clinton grasps the nomination and Sanders supporters are shut out. Just like grassroots Donald Trump supporters, Sanders backers are angry at the political elites and the rules they created to keep power. The GOP isn’t the only party experiencing a populist uprising, and Democrat disunity may prove a serious problem for them in November.