Clinton adds Calif. stops heading into final week
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Democratic presidential front-runner Hillary ClintonHillary Diane Rodham ClintonBiden faces do-or-die primary in South Carolina President Trump's assault on checks and balances: Five acts in four weeks Schiff blasts Trump for making 'false claims' about Russia intel: 'You've betrayed America. Again' MORE is planning to add more campaign stops in California to try to secure a win against a persistent Bernie SandersBernie SandersAdvisor: Sanders could beat Trump in Texas Bloomberg rips Sanders over Castro comments Liberal author Matt Stoller: Iowa caucus screw-up was 'Boeing 737 Max of the Democratic Party' MORE in the nation's biggest primary, according to The Washington Post.

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Clinton was expected to campaign in New Jersey for two days this week. But instead, she canceled an event scheduled for Thursday and will go back to California to spend five days campaigning as Sanders has closed the gap there ahead of voting on June 7.

According to the RealClearPolitics average of polls, Clinton has an 8-point lead in California over the Vermont senator, 50 percent to 42 percent. But in a recent poll conducted from May 13 to 22, Clinton holds just a 2-point lead over Sanders.

Sanders has said he plans to remain in the race and will fight for every delegate possible. He has said he expects to do well in California, where there are 548 delegates at stake.

Sanders is hoping to go into the Democratic National Convention with a "symbolic victory" of a majority of pledged delegates. He has vowed to stay in the race despite Clinton's lead.