Democratic presidential candidate Bernie Sanders Bernie SandersKenosha will be a good bellwether in 2020 Biden's fiscal program: What is the likely market impact? McConnell accuses Democrats of sowing division by 'downplaying progress' on election security MORE on Saturday reiterated his vow to keep campaigning all the way to Democratic National Convention in late July, regardless of how the rest of the primaries turn out.

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"Hillary Clinton Hillary Diane Rodham ClintonWhat Senate Republicans have said about election-year Supreme Court vacancies Bipartisan praise pours in after Ginsburg's death Trump carries on with rally, unaware of Ginsburg's death MORE will not have the requisite number of pledged delegates to win the Democratic nomination at the end of the nominating process on June 14,” Sanders told reporters in Los Angeles on Saturday, according to CNN. “Won't happen. She will be dependent on superdelegates.

"The Democratic National Convention will be a contested convention," he said.

Sanders criticized the media for accounting for superdelegates when talking about Clinton’s lead in the race, saying that their backing of a candidate is fluid and those who support Clinton now have six weeks before they actually cast their votes.

Still, the Vermont senator acknowledged the difficulties of getting enough superdelegates to switch over to him in order to secure the nomination.

"We understand that we have a steep climb," he said. "I'm not here to tell you that tomorrow we're going to flip 300 superdelegates. You don't hear me say that. But I am saying we are going to make the case."

Clinton, the Democratic presidential front-runner, is outpacing Sanders among pledged delegates — 1,769 to 1,501 —and superdelegates, 547 to 46.