SAN JOSE (CBS SF) – As Democratic presidential hopeful Bernie Sanders brings his message to supporters in San Jose, a new poll finds Santa Clara County voters are more supportive of frontrunner Hillary Clinton.

In a poll of 600 likely voters commissioned by the Silicon Valley Leadership Group, the former Secretary of State led the senator from Vermont by a margin of 43 percent to 30 percent.

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When Santa Clara County voters were asked to weigh in on a matchup between Clinton and Republican frontrunner Donald Trump, the Democratic frontrunner trounced the billionaire businessman, 64 percent to 20 percent.

Sanders has pledged to press on with his campaign through the California primary on June 7th, even as Clinton appears close to clinching the Democratic nomination. Following Tuesday’s primaries in Kentucky and Oregon, Clinton has 2,291 delegates and superdelegates, while Sanders has 1,528, according to The Associated Press.

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To clinch the nomination, 2,383 delegates are needed.

Sanders is scheduled to speak at the Santa Clara County Fairgrounds in San Jose on Wednesday afternoon, before speaking to supporters to Vallejo later in the day.

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The poll was taken between April 23rd and May 1st and has a margin of plus or minus 4.2 percentage points.