Democratic presidential candidate Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE said his campaign won't necessarily be over if he doesn't win the California primary on June 7.

"What I said is, obviously, California is very, very important, 475 superdelegates," Sanders said on NBC's "Meet the Press" when asked whether his campaign will end if he doesn't get a win.

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"Obviously, if we don't do well in California, it will make our path much, much harder. No question about it. But I think we have a good chance to winning California, maybe win big, and maybe win four or five of the other states that are off on June 7th."

Sanders called California the "big enchilada," adding that the delegate-rich state is "enormously important."

But he maintained his campaign has had great success over the past several months and vowed to continue battling for delegates.

"You know, my campaign has been written off from before we started. Nobody thought we would do anything," he said in the interview, which aired Sunday.

"We've now won 20 states, primaries and caucuses, and I think by the end of the process, we may win half of the states. So we're going to fight till the last vote is cast and try to appeal to the last delegate that we can."

Sanders said he hopes to go into the Democratic convention with a majority of the pledged delegates, calling it a "symbolic victory." The Vermont senator also said his messages are resonating with people in the country and touted his poll numbers in head-to-head match-ups with presumptive GOP presidential nominee Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE.

He has vowed to remain in the race even though Democratic front-runner Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE has a large delegate lead.