SANTA CRUZ, California — Sen. Bernie Sanders (I-VT) held two rallies on the Central Coast on Tuesday, vowing to tackle the political "oligarchy" of "superdelegates" in the Democratic Party.

"Hillary can show you how absurd the current system is," Sanders said, noting that the former Secretary of State had "received over 400 super delegates supporting her before anyone else was in the race… That is an absurd system and together we are going to change that system."

Sanders spoke before 2,500 at the Kaiser Permanente Arena in Santa Cruz, and at Colton Hall in Monterey, where almost double that number turned up.

Bernie Sanders supporter in Santa Cruz (Adelle Nazarian / Breitbart News)

Bernie Sanders in Monterrey (Adelle Nazarian / Breitbart News)

Earlier in the day, California Gov. Jerry Brown had announced his support for Hillary Clinton, citing her insurmountable lead. Sanders, no doubt, had that in mind as he attacked a primary process that made her the leader from the beginning.

"We are going to change the Democratic Party," he said. "I want to open up the doors of the Democratic Party so that everybody here feels welcome to come in. And that is not the case right now."