The DNC has closed primaries in a lot of states . They have rules like you have to register a certain amount of time before an election in order to vote during primaries . Lots of voters were purged from the database and were unable to vote in the primaries . Bernie won , I believe , every state with open primaries . The DNC flat used their weight and power to promote a substandard candidate , AND LOST THE ELECTION FOR IT . Hillary supporters LOVE to say Bernie shouldn ' t get the nomination anyways , or get fair treatment , because he wasn ' t really a democrat . The DNC pushed and promoted an unelectable candidate . Hillary supporters nominated an unelectable candidate . The blame lies solely on the DNC and primary Hillary votors . Period .