SANTA MONICA (AP) — Bernie Sanders is vowing to continue his quest for the White House, telling supporters in California that he will fight on to compete in next week’s primary in Washington, D.C.

Sanders says at a rollicking rally in Santa Monica that after that election, “we take our fight for social, economic, racial and environmental justice to Philadelphia.”

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The Democratic National Convention takes place in Philadelphia next month.

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That’s where Hillary Clinton will accept the Democratic nomination for president. She has the delegates needed to claim the nomination, and declared victory on Tuesday night in New York.

Sanders says, “I am pretty good at arithmetic. I know that the fight in front of us is a very, very steep fight, but we will continue to fight for every vote and every delegate.”

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