# 2020 California Democratic presidential primary

Elections in California :
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San Diego CountySan Diego County Board of supervisors
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Bakersfield
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vte :
The 2020 California Democratic presidential primary took place on March 3, 2020, as one of 15 contests scheduled on Super Tuesday in the Democratic Party primaries for the 2020 presidential election, following the South Carolina primary the weekend before. The California primary formed an unusual part of Super Tuesday as it had historically departed from its typical June date. It was a semi-closed primary, with the state awarding 494 delegates towards the 2020 Democratic National Convention, of which 415 were pledged delegates allocated on the basis of the results of the primary.
Senator Bernie Sanders won the highly desired primary, which bore the most delegates of the entire primary cycle by far, improving on his polling average by 3% and winning 36% of the vote and 225 delegates. Former vice president Joe Biden, however, aided by among others the endorsements of Pete Buttigieg and Amy Klobuchar, also had a much stronger second-place finish than expected and took 28% of the vote and 172 delegates, matching his successful Super Tuesday momentum and minimizing his delegate deficit, which was also leveled by his other wins on that day. Ultimately, his California loss did not hinder Biden from becoming the new frontrunner for the Democratic nomination. Elizabeth Warren and Michael Bloomberg did not surpass the 15% threshold and only got 11 and 7 delegates in a few districts, respectively.

## Procedure

California was one of 14 states and one territory that held its primaries on March 3, 2020, also known as "Super Tuesday", having joined other states on the date after the signing of the Prime Time Primary Act by Governor Jerry Brown on September 27, 2017, moving the primary from its traditional June date in an effort to increase the influence of the delegate-rich state in the nomination process.
Candidates were allowed to obtain ballot access in a number of ways. They needed to have.:
* "...qualified for funding under the Federal Election Campaign Act of 1974 (52 U.S.C. Sec. 30101, et seq.)
* appeared as a candidate in a national presidential debate hosted by a political party qualified to participate in a primary election, with at least two participating candidates, and publicly available for viewing by voters in more than one state during the current presidential election cycle. A “political party qualified to participate in a primary election” means any political party qualified in California, a major or minor-ballot qualified political party in another state, or a national committee of a political party recognized by the Federal Election Commission
* placed or qualified for placement on a presidential primary ballot or a caucus ballot of a major or minor ballot-qualified political party in at least one other state in the current presidential election cycle
* candidate or qualified to be a candidate in a caucus of a major or minor ballot-qualified political party in at least one other state in the current presidential election cycle
* has the following: current presidential campaign internet website or webpage hosted by the candidate or a qualified political party, and a written request submitted on the candidate's behalf by a party qualified to participate in the primary election to the Secretary of State requesting the candidate be placed on the presidential primary ballot."
If they did not have at least one of those qualifications, they needed to submit petitions of 500 signatures from each of the state's congressional districts obtained between November 4 and December 13, 2019. The official list of qualified candidates was released on December 6, 2019. Unqualified candidates were required to submit their petitions by this date.
Military and overseas mail-in ballots were sent out on January 3, 2020, and domestic mail-in ballots were requested and sent out from February 3 to February 25. Early voting centers opened for business on February 22 and continued until March 3. Election day voting took place throughout the state from 7 a.m. until 8 p.m. In the semi-closed primary, candidates had to meet a threshold of 15 percent at the congressional district or statewide level in order to be considered viable. The 415 pledged delegates to the 2020 Democratic National Convention were allocated proportionally on the basis of the results of the primary. Of these, between 4 and 7 were allocated to each of the state's 53 congressional districts, and another 54 were allocated to party leaders and elected officials (PLEO delegates), in addition to 90 at-large delegates. The Super Tuesday primary as part of Stage I on the primary timetable received no bonus delegates, in order to disperse the primaries between more different date clusters and keep too many states from hoarding on the first shared date or on a March date in general.
Following the primary, district-level delegates to the national convention were elected on June 7, 2020 (postponed from April 19 due to the COVID-19 pandemic) in the post-primary caucus. Should presidential candidates have been allocated more delegates based on the results of the primary than delegate candidates presented, then supplemental delegates would have been elected at caucuses on May 9, 2020. The national convention delegation meeting was subsequently held on June 28, 2020 (postponed from May 17) during the state convention, to vote on the 54 pledged PLEO and 90 at-large delegates for the Democratic National Convention. The delegation also included 79 unpledged PLEO delegates: 31 members of the Democratic National Committee, 47 members of Congress (both senators, including former candidate Kamala Harris, and 45 representatives, including former candidate Eric Swalwell), and the governor Gavin Newsom.
Pledged national convention delegates :
| Type | Del. | Type | Del. | Type | Del. | Type | Del. |
| CD1 | 4 | CD14 | 6 | CD27 | 5 | CD40 | 5 |
| CD2 | 6 | CD15 | 6 | CD28 | 6 | CD41 | 5 |
| CD3 | 5 | CD16 | 4 | CD29 | 5 | CD42 | 5 |
| CD4 | 5 | CD17 | 5 | CD30 | 6 | CD43 | 5 |
| CD5 | 6 | CD18 | 6 | CD31 | 5 | CD44 | 5 |
| CD6 | 5 | CD19 | 6 | CD32 | 5 | CD45 | 5 |
| CD7 | 5 | CD20 | 5 | CD33 | 6 | CD46 | 4 |
| CD8 | 4 | CD21 | 4 | CD34 | 5 | CD47 | 5 |
| CD9 | 5 | CD22 | 4 | CD35 | 5 | CD48 | 5 |
| CD10 | 4 | CD23 | 4 | CD36 | 4 | CD49 | 5 |
| CD11 | 6 | CD24 | 5 | CD37 | 6 | CD50 | 4 |
| CD12 | 7 | CD25 | 5 | CD38 | 5 | CD51 | 5 |
| CD13 | 7 | CD26 | 5 | CD39 | 5 | CD52 | 6 |
| PLEO | PLEO | 54 | At-large | At-large | 90 | CD53 | 6 |
| Total pledged delegates | Total pledged delegates | Total pledged delegates | Total pledged delegates | Total pledged delegates | Total pledged delegates | 415 | 415 |

## Candidates

The following candidates appear in the Certified List of Statewide Candidates:
Running
* Joe Biden
* Michael Bloomberg
* Mosie Boyd
* Roque "Rocky" De La Fuente III
* Michael A. Ellinger
* Tulsi Gabbard
* Mark Stewart Greenstein
* Bernie Sanders
* Elizabeth Warren
Withdrawn
* Michael Bennet
* Cory Booker
* Pete Buttigieg
* Julian Castro
* John Delaney
* Amy Klobuchar
* Deval Patrick
* Joe Sestak
* Tom Steyer
* Marianne Williamson
* Andrew Yang

## Polling

Polling aggregation :
| Source of poll aggregation | Date updated | Dates polled | Bernie Sanders | Joe Biden | Elizabeth Warren | Michael Bloomberg | Tulsi Gabbard | Other/ Undecided |
| 270 to Win | March 3, 2020 | February 20 – March 1, 2020 | 33.0% | 20.0% | 14.4% | 15.0% | 1.2% | 16.4% |
| RealClear Politics | March 3, 2020 | February 28 – March 2, 2020 | 35.0% | 23.0% | 16.0% | 14.0% | 1.5% | 10.5% |
| FiveThirtyEight | March 3, 2020 | until March 2, 2020 | 31.2% | 21.7% | 14.9% | 14.7% | 0.7% | 16.8% |
| Average | Average | Average | 33.1% | 21.6% | 15.1% | 14.6% | 1.1% | 14.5% |
| California primary results (March 3, 2020) | California primary results (March 3, 2020) | California primary results (March 3, 2020) | 36.0% | 27.9% | 13.2% | 12.1% | 0.6% | 10.2% |
Polling from January 1 to March 3, 2020 :
| Poll source | Date(s) administered | Sample size | Margin of error | Joe Biden | Michael Bloomberg | Pete Buttigieg | Amy Klobuchar | Bernie Sanders | Tom Steyer | Elizabeth Warren | Andrew Yang | Other | Undecided |
| | March 2, 2020 | Klobuchar withdraws from the race. | Klobuchar withdraws from the race. | Klobuchar withdraws from the race. | Klobuchar withdraws from the race. | Klobuchar withdraws from the race. | Klobuchar withdraws from the race. | Klobuchar withdraws from the race. | Klobuchar withdraws from the race. | Klobuchar withdraws from the race. | Klobuchar withdraws from the race. | Klobuchar withdraws from the race. | Klobuchar withdraws from the race. |
| Swayable | March 1–2, 2020 | 3,388 (LV) | ± 2.0% | 20.8% | 19.3% | 8.4% | 3.3% | 28.7% | 4.0% | 9.6% | – | 6.0% | – |
| Data for Progress | February 28 – March 2, 2020 | 516 (LV) | ± 4.3% | 25% | 17% | 5% | 3% | 32% | – | 16% | – | 1% | – |
| AtlasIntel | February 24 – March 2, 2020 | 727 (LV) | ± 4.0% | 26% | 15% | 3% | 1% | 34% | – | 15% | – | 2% | 4% |
| | March 1, 2020 | Buttigieg withdraws from the race. | Buttigieg withdraws from the race. | Buttigieg withdraws from the race. | Buttigieg withdraws from the race. | Buttigieg withdraws from the race. | Buttigieg withdraws from the race. | Buttigieg withdraws from the race. | Buttigieg withdraws from the race. | Buttigieg withdraws from the race. | Buttigieg withdraws from the race. | Buttigieg withdraws from the race. | Buttigieg withdraws from the race. |
| Point Blank Political | February 29 – March 1, 2020 | 1,220 (LV) | ± 4.1% | 22% | 10% | 6% | 3% | 34% | 1% | 14% | – | 1% | 9% |
| Emerson College/Nexstar | February 29 – March 1, 2020 | 545 (LV) | ± 4.1% | 21% | 11% | 7% | 5% | 38% | 2% | 16% | – | 1% | – |
| | February 29, 2020 | South Carolina primary; Steyer withdraws from the race after close of polls. | South Carolina primary; Steyer withdraws from the race after close of polls. | South Carolina primary; Steyer withdraws from the race after close of polls. | South Carolina primary; Steyer withdraws from the race after close of polls. | South Carolina primary; Steyer withdraws from the race after close of polls. | South Carolina primary; Steyer withdraws from the race after close of polls. | South Carolina primary; Steyer withdraws from the race after close of polls. | South Carolina primary; Steyer withdraws from the race after close of polls. | South Carolina primary; Steyer withdraws from the race after close of polls. | South Carolina primary; Steyer withdraws from the race after close of polls. | South Carolina primary; Steyer withdraws from the race after close of polls. | South Carolina primary; Steyer withdraws from the race after close of polls. |
| YouGov/CBS News | February 27–29, 2020 | 1,411 (LV) | ± 4.0% | 19% | 12% | 9% | 4% | 31% | 3% | 18% | – | 4% | – |
| Suffolk University | February 26–29, 2020 | 500 (LV) | ± 4.4% | 14% | 16% | 7% | 5% | 35% | 3% | 12% | – | 3% | – |
| YouGov/Hoover Institution/Stanford University | February 26–28, 2020 | 1,020 (LV) | – | 19% | 13% | 9% | 6% | 28% | 4% | 18% | – | 3% | – |
| Point Blank Political | February 26–28, 2020 | 2,276 (LV) | ± 2.9% | 14% | 12% | 9% | 3% | 34% | 3% | 14% | – | 1% | 10% |
| Point Blank Political | February 26–28, 2020 | 2,276 (LV) | ± 2.9% | 40% | – | – | – | 50% | – | – | – | – | 11% |
| Point Blank Political | February 26–28, 2020 | 2,276 (LV) | ± 2.9% | – | 32% | – | – | 57% | – | – | – | – | 11% |
| Point Blank Political | February 26–28, 2020 | 2,276 (LV) | ± 2.9% | – | – | – | – | 46% | – | 36% | – | – | 16% |
| CNN/SSRS | February 22–26, 2020 | 488 (LV) | ± 5.2% | 13% | 12% | 7% | 6% | 35% | 3% | 14% | – | 3% | 8% |
| | February 25, 2020 | Tenth Democratic primary debate | Tenth Democratic primary debate | Tenth Democratic primary debate | Tenth Democratic primary debate | Tenth Democratic primary debate | Tenth Democratic primary debate | Tenth Democratic primary debate | Tenth Democratic primary debate | Tenth Democratic primary debate | Tenth Democratic primary debate | Tenth Democratic primary debate | Tenth Democratic primary debate |
| Point Blank Political | February 23–25, 2020 | 2,098 (LV) | ± 3.0% | 11% | 11% | 9% | 4% | 34% | 3% | 13% | – | 2% | 13% |
| Berkeley IGS/LA Times | Feb 20–25, 2020 | 3,002 (LV) | ± 2.0% | 8% | 12% | 11% | 6% | 34% | 2% | 17% | 1% | 2% | 7% |
| | February 22, 2020 | Nevada caucuses | Nevada caucuses | Nevada caucuses | Nevada caucuses | Nevada caucuses | Nevada caucuses | Nevada caucuses | Nevada caucuses | Nevada caucuses | Nevada caucuses | Nevada caucuses | Nevada caucuses |
| Change Research/KQED News | February 20–23, 2020 | 1,069 (LV) | ± 3.4% | 12% | 6% | 11% | 5% | 37% | 3% | 20% | 4% | 3% | – |
| University of Massachusetts Lowell | February 12–20, 2020 | 450 (LV) | ± 6.7% | 13% | 12% | 12% | 7% | 24% | 2% | 16% | – | 7% | 6% |
| Monmouth University | February 16–19, 2020 | 408 (LV) | ± 4.9% | 17% | 13% | 9% | 4% | 24% | 5% | 10% | – | 3% | 13% |
| Monmouth University | February 16–19, 2020 | 408 (LV) | ± 4.9% | 36% | – | – | – | 44% | – | – | – | 15% | 5% |
| Monmouth University | February 16–19, 2020 | 408 (LV) | ± 4.9% | – | 31% | – | – | 48% | – | – | – | 14% | 6% |
| Monmouth University | February 16–19, 2020 | 408 (LV) | ± 4.9% | – | – | 26% | – | 51% | – | – | – | 16% | 7% |
| Monmouth University | February 16–19, 2020 | 408 (LV) | ± 4.9% | – | – | – | 24% | 54% | – | – | – | 16% | 6% |
| Public Policy Institute of California | February 7–17, 2020 | 573 (LV) | ± 5.7% | 14% | 12% | 12% | 5% | 32% | 3% | 13% | – | 2% | 8% |
| SurveyUSA | February 13–16, 2020 | 520 (LV) | ± 4.8% | 15% | 21% | 12% | 6% | 25% | 3% | 9% | – | 1% | 9% |
| YouGov/USC | February 1–15, 2020 | – | – | 21% | 8% | 6% | 3% | 29% | 2% | 20% | – | 2% | 9% |
| | February 11, 2020 | New Hampshire primary; Yang withdraws from the race after close of polls. | New Hampshire primary; Yang withdraws from the race after close of polls. | New Hampshire primary; Yang withdraws from the race after close of polls. | New Hampshire primary; Yang withdraws from the race after close of polls. | New Hampshire primary; Yang withdraws from the race after close of polls. | New Hampshire primary; Yang withdraws from the race after close of polls. | New Hampshire primary; Yang withdraws from the race after close of polls. | New Hampshire primary; Yang withdraws from the race after close of polls. | New Hampshire primary; Yang withdraws from the race after close of polls. | New Hampshire primary; Yang withdraws from the race after close of polls. | New Hampshire primary; Yang withdraws from the race after close of polls. | New Hampshire primary; Yang withdraws from the race after close of polls. |
| Capitol Weekly | February 6–9, 2020 | 843 (LV) | – | 8% | 8% | 15% | 7% | 25% | 4% | 19% | 5% | 6% | 3% |
| Capitol Weekly | February 6–9, 2020 | 843 (LV) | – | 11% | 13% | 14% | 5% | 29% | 3% | 16% | 4% | 5% | 1% |
| | February 3, 2020 | Iowa Caucuses | Iowa Caucuses | Iowa Caucuses | Iowa Caucuses | Iowa Caucuses | Iowa Caucuses | Iowa Caucuses | Iowa Caucuses | Iowa Caucuses | Iowa Caucuses | Iowa Caucuses | Iowa Caucuses |
| Change Research/KQED News | January 25–27, 2020 | 1,967 (LV) | – | 15% | 4% | 8% | 3% | 30% | 2% | 16% | 5% | 4% | 13% |
| Berkeley IGS/LA Times | January 15–21, 2020 | 2,895 (LV) | ± 2.5% | 15.0% | 6.0% | 7.2% | 4.9% | 26.3% | 1.8% | 19.6% | 3.9% | 3.6% | 11.7% |
| SurveyUSA | January 14–16, 2020 | 565 (LV) | ± 5.1% | 30% | 6% | 8% | 2% | 20% | 4% | 20% | 4% | 2% | 4% |
| | January 13, 2020 | Booker withdraws from the race. | Booker withdraws from the race. | Booker withdraws from the race. | Booker withdraws from the race. | Booker withdraws from the race. | Booker withdraws from the race. | Booker withdraws from the race. | Booker withdraws from the race. | Booker withdraws from the race. | Booker withdraws from the race. | Booker withdraws from the race. | Booker withdraws from the race. |
| Public Policy Institute of California/Mercury News | January 3–12, 2020 | 530 (LV) | ± 6.5% | 24% | 1% | 6% | 4% | 27% | – | 23% | 3% | 5% | 7% |
| Tulchin Research/USC Rossier/The Hill | January 3–10, 2020 | 1,121 (LV) | – | 25% | 7% | 8% | 2% | 29% | 3% | 12% | 5% | 2% | 6% |
| Capitol Weekly | January 1–9, 2020 | 1,053 (LV) | – | 20% | 6% | 11% | 5% | 24% | 2% | 21% | 7% | 3% | – |
Polling before 1 January 2020 :
| Poll source | Date(s) administered | Sample size | Margin of error | Joe Biden | Cory Booker | Pete Buttigieg | Kamala Harris | Beto O'Rourke | Bernie Sanders | Elizabeth Warren | Andrew Yang | Other | Undecided |
| Change Research/KQED News | December 6–10, 2019 | 862 (LV) | ± 3.3% | 19% | 3% | 12% | – | – | 26% | 23% | 4% | 13% | – |
| CNN/SSRS | December 4–8, 2019 | 508 (LV) | ± 5.2% | 21% | 3% | 9% | – | – | 20% | 17% | 6% | 12% | 11% |
| Capitol Weekly | December 3–7, 2019 | 581 (LV) | – | 19% | 2% | 14% | – | – | 19% | 23% | 5% | 17% | 1% |
| Capitol Weekly | December 3–7, 2019 | 581 (LV) | – | 19% | 2% | 13% | 4% | – | 19% | 21% | 5% | 17% | 0% |
| | December 3, 2019 | Harris withdraws from the race. | Harris withdraws from the race. | Harris withdraws from the race. | Harris withdraws from the race. | Harris withdraws from the race. | Harris withdraws from the race. | Harris withdraws from the race. | Harris withdraws from the race. | Harris withdraws from the race. | Harris withdraws from the race. | Harris withdraws from the race. | Harris withdraws from the race. |
| Berkeley IGS/LA Times | November 21–27, 2019 | 1,252 (LV) | – | 14% | 1% | 12% | 7% | – | 24% | 22% | 3% | 12% | 9% |
| SurveyUSA | November 20–22, 2019 | 558 (LV) | ± 4.8% | 28% | 3% | 8% | 10% | – | 18% | 13% | 5% | 11% | 5% |
| Capitol Weekly | November 1–12, 2019 | 695 (LV) | – | 18% | 1% | 14% | 6% | – | 21% | 27% | 4% | 8% | 1% |
| Public Policy Institute of California | November 3–12, 2019 | 682 (LV) | – | 24% | 1% | 7% | 8% | – | 17% | 23% | 5% | 6% | 9% |
| | November 1, 2019 | O'Rourke withdraws from the race. | O'Rourke withdraws from the race. | O'Rourke withdraws from the race. | O'Rourke withdraws from the race. | O'Rourke withdraws from the race. | O'Rourke withdraws from the race. | O'Rourke withdraws from the race. | O'Rourke withdraws from the race. | O'Rourke withdraws from the race. | O'Rourke withdraws from the race. | O'Rourke withdraws from the race. | O'Rourke withdraws from the race. |
| Change Research | October 15–18, 2019 | 1,631 (LV) | – | 19% | 1% | 9% | 8% | 1% | 24% | 28% | 3% | 6% | – |
| SurveyUSA | October 15–16, 2019 | 553 (LV) | ± 6.9% | 33% | 2% | 4% | 8% | 2% | 17% | 18% | 4% | 5% | 8% |
| Capitol Weekly | October 1–14, 2019 | 590 (LV) | – | 21% | 2% | 6% | 8% | 0% | 15% | 35% | 3% | 9% | – |
| [[Public Policy Institute of<br ]]/[[>California]] | September 16–25, 2019 | 692 (LV) | ± 4.9% | 22% | 2% | 6% | 8% | 1% | 21% | 23% | 3% | 7% | 9% |
| Berkeley IGS/LA Times | September 13–18, 2019 | 2,272 | – | 20% | 1% | 6% | 8% | 3% | 19% | 29% | 2% | 5% | 8% |
| Emerson College | September 13–16, 2019 | 424 | ± 4.7% | 26% | 1% | 4% | 6% | 5% | 26% | 20% | 7% | 4% | – |
| SurveyUSA | September 13–15, 2019 | 547 | ± 4.8% | 27% | 2% | 3% | 13% | 2% | 18% | 16% | 7% | 4% | 7% |
| Change Research/KQED | September 12–15, 2019 | 3,325 | ± 1.7% | 18% | 2% | 10% | 11% | 2% | 23% | 25% | 3% | 5% | – |
| Capitol Weekly | September 1–13, 2019 | 599 | – | 18% | 1% | 7% | 11% | 2% | 21% | 29% | 4% | 5% | – |
| Capitol Weekly | September 1–13, 2019 | 5,510 | – | 18% | 1% | 8% | 11% | 2% | 17% | 33% | 3% | 7% | – |
| SurveyUSA | August 1–5, 2019 | 528 | ± 6.3% | 25% | 1% | 6% | 17% | 0% | 18% | 21% | 1% | 1% | 10% |
| PPIC | July 14–23, 2019 | 766 | ± 4.4% | 11% | – | 5% | 19% | – | 12% | 15% | – | 14% | 25% |
| YouGov/CBS News | July 9–18, 2019 | 1,514 | ± 2.9% | 24% | 1% | 6% | 23% | 1% | 16% | 19% | 1% | 9% | – |
| Quinnipiac University | July 10–15, 2019 | 519 | ± 5.7% | 21% | 1% | 3% | 23% | 1% | 18% | 16% | 2% | 2% | 10% |
| Capitol Weekly | July 1–15, 2019 | 816 | – | 20% | 1% | 8% | 20% | 2% | 16% | 25% | 1% | 7% | – |
| Change Research | July 9–11, 2019 | 1,609 | ± 2.5% | 17% | 1% | 8% | 23% | 2% | 20% | 22% | 2% | 5% | – |
| | July 8, 2019 | Swalwell withdraws from the race. | Swalwell withdraws from the race. | Swalwell withdraws from the race. | Swalwell withdraws from the race. | Swalwell withdraws from the race. | Swalwell withdraws from the race. | Swalwell withdraws from the race. | Swalwell withdraws from the race. | Swalwell withdraws from the race. | Swalwell withdraws from the race. | Swalwell withdraws from the race. | Swalwell withdraws from the race. |
| Capitol Weekly | June 1–30, 2019 | 813 | – | 23% | 2% | 8% | 14% | 2% | 19% | 23% | 2% | 9% | – |
| UC Berkeley | June 4–10, 2019 | 2,131 | ± 3.0% | 22% | 1% | 10% | 13% | 3% | 17% | 18% | 1% | 3% | 11% |
| Capitol Weekly | May 1–31, 2019 | 1,180 | – | 29% | 2% | 9% | 17% | 4% | 22% | 11% | 0% | 6% | – |
| Change Research | May 25–28, 2019 | 1,649 | ± 2.4% | 30% | 1% | 12% | 15% | 3% | 23% | 12% | 1% | 2% | – |
| Capitol Weekly | April 15–30, 2019 | 1,204 | – | 20% | 2% | 19% | 17% | 4% | 20% | 10% | – | 9% | – |
| | April 25, 2019 | Biden announces his candidacy. | Biden announces his candidacy. | Biden announces his candidacy. | Biden announces his candidacy. | Biden announces his candidacy. | Biden announces his candidacy. | Biden announces his candidacy. | Biden announces his candidacy. | Biden announces his candidacy. | Biden announces his candidacy. | Biden announces his candidacy. | Biden announces his candidacy. |
| | April 14, 2019 | Buttigieg announces his candidacy. | Buttigieg announces his candidacy. | Buttigieg announces his candidacy. | Buttigieg announces his candidacy. | Buttigieg announces his candidacy. | Buttigieg announces his candidacy. | Buttigieg announces his candidacy. | Buttigieg announces his candidacy. | Buttigieg announces his candidacy. | Buttigieg announces his candidacy. | Buttigieg announces his candidacy. | Buttigieg announces his candidacy. |
| Change Research | April 6–9, 2019 | 2,003 | ± 2.2% | 21% | 3% | 9% | 19% | 10% | 22% | 8% | 1% | 7% | – |
| Change Research | April 6–9, 2019 | 2,003 | ± 2.2% | – | 5% | 11% | 27% | 16% | 28% | 9% | 1% | 5% | – |
| | April 8, 2019 | Swalwell announces his candidacy. | Swalwell announces his candidacy. | Swalwell announces his candidacy. | Swalwell announces his candidacy. | Swalwell announces his candidacy. | Swalwell announces his candidacy. | Swalwell announces his candidacy. | Swalwell announces his candidacy. | Swalwell announces his candidacy. | Swalwell announces his candidacy. | Swalwell announces his candidacy. | Swalwell announces his candidacy. |
| Quinnipiac University | April 3–8, 2019 | 482 | ± 5.9% | 26% | 2% | 7% | 17% | 4% | 18% | 7% | 1% | 6% | 13% |
| | March 14, 2019 | O'Rourke announces his candidacy. | O'Rourke announces his candidacy. | O'Rourke announces his candidacy. | O'Rourke announces his candidacy. | O'Rourke announces his candidacy. | O'Rourke announces his candidacy. | O'Rourke announces his candidacy. | O'Rourke announces his candidacy. | O'Rourke announces his candidacy. | O'Rourke announces his candidacy. | O'Rourke announces his candidacy. | O'Rourke announces his candidacy. |
| | February 19, 2019 | Sanders announces his candidacy. | Sanders announces his candidacy. | Sanders announces his candidacy. | Sanders announces his candidacy. | Sanders announces his candidacy. | Sanders announces his candidacy. | Sanders announces his candidacy. | Sanders announces his candidacy. | Sanders announces his candidacy. | Sanders announces his candidacy. | Sanders announces his candidacy. | Sanders announces his candidacy. |
| Change Research | February 9–11, 2019 | 948 | – | 26% | 3% | 1% | 26% | 8% | 20% | 7% | 0% | 7% | – |
| Change Research | February 9–11, 2019 | 948 | – | – | 7% | 2% | 53% | – | – | 23% | 1% | 15% | – |

## Results

2020 California Democratic presidential primary :
| Candidate | Votes | % | Delegates |
| Bernie Sanders | 2,080,846 | 35.97 | 225 |
| Joe Biden | 1,613,854 | 27.90 | 172 |
| Elizabeth Warren | 762,555 | 13.18 | 11 |
| Michael Bloomberg | 701,803 | 12.13 | 7 |
| Pete Buttigieg (withdrawn) | 249,256 | 4.31 | |
| Amy Klobuchar (withdrawn) | 126,961 | 2.19 | |
| Tom Steyer (withdrawn) | 113,092 | 1.96 | |
| Andrew Yang (withdrawn) | 43,571 | 0.75 | |
| Tulsi Gabbard | 33,769 | 0.58 | |
| Julian Castro (withdrawn) | 13,892 | 0.24 | |
| Michael Bennet (withdrawn) | 7,377 | 0.13 | |
| Marianne Williamson (withdrawn) | 7,052 | 0.12 | |
| Cory Booker (withdrawn) | 6,000 | 0.10 | |
| John Delaney (withdrawn) | 4,606 | 0.08 | |
| Joe Sestak (withdrawn) | 3,270 | 0.06 | |
| Deval Patrick (withdrawn) | 2,022 | 0.03 | |
| Other candidates / Write-in | 14,438 | 0.25 | |
| Total | 5,784,364 | 100% | 415 |
Votes (percentage) and delegates by district :
| District | Bernie Sanders | Bernie Sanders | Joe Biden | Joe Biden | Michael Bloomberg | Michael Bloomberg | Elizabeth Warren | Elizabeth Warren | Total delegates | District region | Largest city |
| 1st | 34% | 2 | 23.7% | 2 | 10.3% | 0 | 12.9% | 0 | 4 | Shasta Cascade | Chico, Redding |
| 2nd | 33.3% | 3 | 25.3% | 2 | 13.5% | 0 | 15.9% | 1 | 6 | North Coast | Eureka |
| 3rd | 34.3% | 3 | 29.3% | 2 | 12% | 0 | 12% | 0 | 5 | Sacramento Valley | Fairfield |
| 4th | 26.1% | 2 | 29.6% | 3 | 14.7% | 0 | 11.4% | 0 | 5 | Sierras | Roseville |
| 5th | 32.7% | 3 | 27.2% | 3 | 14.9% | 0 | 12.6% | 0 | 6 | Wine Country | Santa Rosa |
| 6th | 35.8% | 3 | 28.1% | 2 | 10.7% | 0 | 14.3% | 0 | 5 | Sacramento Valley | Sacramento |
| 7th | 30.9% | 2 | 31.4% | 3 | 13% | 0 | 11.2% | 0 | 5 | Sacramento Valley | Elk Grove |
| 8th | 35.7% | 2 | 31.2% | 2 | 11.8% | 0 | 8.8% | 0 | 4 | Eastern Desert | Victorville |
| 9th | 32.9% | 2 | 32.5% | 2 | 15.9% | 1 | 7% | 0 | 5 | San Joaquin Valley | Stockton |
| 10th | 35.5% | 2 | 29.1% | 1 | 15.3% | 1 | 7.2% | 0 | 4 | San Joaquin Valley | Modesto |
| 11th | 29% | 2 | 30.7% | 3 | 15.3% | 1 | 14.7% | 0 | 6 | Bay Area | Concord |
| 12th | 33.8% | 3 | 23.9% | 2 | 11% | 0 | 23.4% | 2 | 7 | San Francisco Bay Area | San Francisco |
| 13th | 38.7% | 3 | 22.4% | 2 | 8.1% | 0 | 24.7% | 2 | 7 | Bay Area | Oakland |
| 14th | 31.9% | 3 | 26.4% | 2 | 15.6% | 1 | 14.8% | 0 | 6 | Bay Area | Daly City |
| 15th | 34.1% | 3 | 29.5% | 3 | 14.4% | 0 | 11.5% | 0 | 6 | Bay Area | Hayward |
| 16th | 40.9% | 3 | 26.2% | 1 | 12.6% | 0 | 7.2% | 0 | 4 | San Joaquin Valley | Fresno, Merced |
| 17th | 36.1% | 3 | 25.9% | 2 | 14.3% | 0 | 12.5% | 0 | 5 | Bay Area | Fremont, Santa Clara |
| 18th | 26.6% | 2 | 29% | 2 | 15.4% | 1 | 17.1% | 1 | 6 | Bay Area | Sunnyvale |
| 19th | 38.9% | 4 | 25.9% | 2 | 13.6% | 0 | 10.7% | 0 | 6 | Bay Area | San Jose |
| 20th | 39.8% | 3 | 25.5% | 2 | 10.9% | 0 | 13% | 0 | 5 | Central Coast | Salinas |
| 21st | 43.2% | 3 | 25.3% | 1 | 13.7% | 0 | 5.1% | 0 | 4 | San Joaquin Valley | Kings, Kern, SW Fresno |
| 22nd | 34.4% | 2 | 29.1% | 2 | 13% | 0 | 8.8% | 0 | 4 | San Joaquin Valley | Visalia |
| 23rd | 34.9% | 2 | 30.2% | 2 | 12.2% | 0 | 9% | 0 | 4 | South Central California | Bakersfield |
| 24th | 35.3% | 3 | 26.8% | 2 | 10.5% | 0 | 14.7% | 0 | 5 | Central Coast | Santa Maria |
| 25th | 35.6% | 3 | 33.6% | 2 | 10% | 0 | 10% | 0 | 5 | LA County | Santa Clarita |
| 26th | 34.4% | 3 | 31.1% | 2 | 12.1% | 0 | 11.5% | 0 | 5 | Central Coast | Oxnard |
| 27th | 35.9% | 2 | 29.2% | 2 | 10.2% | 0 | 15.7% | 1 | 5 | LA County | San Gabriel Valley |
| 28th | 40% | 3 | 22.7% | 2 | 7.5% | 0 | 21.7% | 1 | 6 | LA County | Glendale |
| 29th | 49.8% | 3 | 21.5% | 2 | 7.7% | 0 | 11.2% | 0 | 5 | LA County | San Fernando Valley |
| 30th | 32.6% | 3 | 31.2% | 2 | 11.2% | 0 | 15.4% | 1 | 6 | LA County | San Fernando Valley |
| 31st | 39.1% | 3 | 32.3% | 2 | 11% | 0 | 8.3% | 0 | 5 | Southern California | San Bernardino |
| 32nd | 44.7% | 3 | 28.2% | 2 | 10.5% | 0 | 7.5% | 0 | 5 | LA County | El Monte |
| 33rd | 26.2% | 2 | 34.2% | 3 | 14.3% | 0 | 16.1% | 1 | 6 | LA County | Santa Monica, Coastal LA |
| 34th | 53.7% | 4 | 16.8% | 1 | 8.1% | 0 | 14.7% | 0 | 5 | LA County | Downtown Los Angeles |
| 35th | 46.6% | 2 | 28.2% | 2 | 10.9% | 0 | 6.2% | 0 | 4 | Southern California | Fontana |
| 36th | 27.5% | 1 | 29.8% | 2 | 15.4% | 1 | 8.1% | 0 | 4 | Eastern Desert | Indio |
| 37th | 35.6% | 3 | 31.3% | 2 | 10.1% | 0 | 16.2% | 1 | 6 | LA County | West LA |
| 38th | 41.7% | 3 | 30.8% | 2 | 10.5% | 0 | 7.6% | 0 | 5 | LA County | Norwalk |
| 39th | 36.7% | 3 | 30.5% | 2 | 12.6% | 0 | 9.6% | 0 | 5 | Southern California | Fullerton |
| 40th | 56.4% | 4 | 20.9% | 1 | 8.9% | 0 | 5.4% | 0 | 5 | LA County | East Los Angeles |
| 41st | 45% | 3 | 27.9% | 2 | 10.7% | 0 | 7.5% | 0 | 5 | Southern California | Riverside |
| 42nd | 37% | 3 | 31.6% | 2 | 12.4% | 0 | 7.9% | 0 | 5 | Southern California | Corona |
| 43rd | 36.5% | 3 | 34.3% | 2 | 10% | 0 | 10.3% | 0 | 5 | LA County | Inglewood |
| 44th | 44% | 3 | 29.6% | 2 | 6.2% | 0 | 9.6% | 0 | 5 | Los Angeles County | Compton |
| 45th | 34% | 3 | 29.1% | 2 | 13.5% | 0 | 12% | 0 | 5 | Southern California | Irvine |
| 46th | 53.7% | 2 | 20% | 2 | 10.5% | 0 | 7.7% | 0 | 4 | Southern California | Anaheim |
| 47th | 38.5% | 3 | 27.3% | 2 | 10.6% | 0 | 12.2% | 0 | 5 | Southern California | Long Beach |
| 48th | 30.4% | 2 | 30.3% | 2 | 16.3% | 1 | 11% | 0 | 5 | Southern California | Huntington Beach |
| 49th | 30.6% | 3 | 30.5% | 2 | 14.6% | 0 | 12.2% | 0 | 5 | Southern California | Oceanside |
| 50th | 34.9% | 2 | 27.6% | 2 | 13% | 0 | 11.3% | 0 | 4 | Southern California | Escondido |
| 51st | 49.2% | 3 | 23.7% | 2 | 11.3% | 0 | 6.8% | 0 | 5 | Southern California | Downtown San Diego and Border Communities |
| 52nd | 30.6% | 3 | 30% | 3 | 13.4% | 0 | 14.6% | 0 | 6 | Southern California | North San Diego |
| 53rd | 37.8% | 3 | 27.3% | 3 | 10.1% | 0 | 14.5% | 0 | 6 | Southern California | Eastern San Diego and suburbs |
| Total | 36.0% | 144 | 27.9% | 109 | 12.1% | 7 | 13.2% | 11 | 271 | | |
Pledged delegates :
| Delegate type | Bernie Sanders | Joe Biden | Michael Bloomberg | Elizabeth Warren |
| At-large | 51 | 39 | 0 | 0 |
| PLEO | 30 | 24 | 0 | 0 |
| District-level | 144 | 109 | 7 | 11 |
| Total | 225 | 172 | 7 | 11 |