California poll shows Biden, Sanders, Warren bunched atop Democratic field

California poll shows Biden, Sanders, Warren bunched atop Democratic field
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Former Vice President Joe BidenJoe BidenBiden looks to shore up lead in S.C. Hillicon Valley: Dems cancel surveillance vote after pushback to amendments | Facebook to ban certain coronavirus ads | Lawmakers grill online ticketing execs | Hacker accessed facial recognition company's database Vulnerable Democrats brace for Sanders atop ticket MORE is leading the crowded Democratic primary pack in California, followed closely by progressive Sens. Elizabeth WarrenElizabeth Ann WarrenBiden looks to shore up lead in S.C. Hillicon Valley: Dems cancel surveillance vote after pushback to amendments | Facebook to ban certain coronavirus ads | Lawmakers grill online ticketing execs | Hacker accessed facial recognition company's database Push for national popular vote movement gets boost from conservatives MORE (D-Mass.) and Bernie SandersBernie SandersDNC warns campaigns about cybersecurity after attempted scam Overnight Health Care — Presented by American Health Care Association — Trump taps Pence to lead coronavirus response | Trump accuses Pelosi of trying to create panic | CDC confirms case of 'unknown' origin | Schumer wants .5 billion in emergency funds Biden looks to shore up lead in S.C. MORE (I-Vt.), according to a new CNN poll.

Twenty-one percent of likely Democratic primary voters in the Golden State said they supported Biden, while 20 percent backed Sanders and 17 percent threw their support behind Warren.

South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegBiden looks to shore up lead in S.C. Vulnerable Democrats brace for Sanders atop ticket The Hill's Campaign Report: Gloves off in South Carolina MORE (D) and businessman Andrew YangAndrew Yang6 ways the primary fight is toughening up Democrats for the fall general election The Hill's Morning Report - Sanders steamrolls to South Carolina primary, Super Tuesday Yang calls on someone to 'pull an Andrew Yang' and bow out of 2020 race MORE trailed the front-runners with 9 percent and 6 percent, respectively.

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Former New York City Mayor Michael BloombergMichael Rubens BloombergGiuliani: Bloomberg 'jeopardized' stop and frisk by 'overusing it' Bloomberg calls on Trump to implement firearm background checks The Hill's Campaign Report: Gloves off in South Carolina MORE, who jumped into the race last month, polled at 5 percent. The billionaire candidate has focused on Super Tuesday states like California instead of early contest states like Iowa and New Hampshire.

Other surveys have found a tight race taking shape ahead of California's March 3 primary.

A Los Angeles Times poll released last week showed Sanders in the lead with 24 percent, with Warren at 22 percent.

California plays a crucial role in the Democratic nominating process because it doles out the most delegates for the nominating convention with its winner-take-all primary.

Biden, Warren, Sanders and Buttigieg are the top four candidates nationally, according to several polls.

The CNN survey in California was conducted among 1,203 adults and has a margin of sampling error of plus or minus 3.4 percentage points. Among the 508 likely Democratic primary voters polled in the state, the margin of sampling error was 5.2 points.