This Presidential Primary coincides with a state/local primary. These coinciding primaries tend to have an impact upon voter turnout.

Participation in California's delegate selection process is open to all voters who wish to participate as Democrats. Under California law, voters who are either registered as either Democrats or No Party Preference may request a Democratic primary ballot. Voters who do so, will have the request noted on their voter file. Any U.S. citizen resident in California who is not on parole for a felony conviction may register to vote as a Democrat. [(Rule 2.A Rule 2.C & Reg. 4.3)]

Tuesday 3 March 2020: California Primary. Hours 7:00a-8:00p PST (1500-0400 UTC). Delegate Pledging: Proportional Primary. Voter Eligibility: Modified Primary.

Primary (preliminary)
Included in Nationwide vote.

Tuesday 3 March 2020: 416 of 495 delegates to the Democratic National Convention are pledged to presidential contenders based on the results of the voting in today's California Presidential Primary. A mandatory 15 percent threshold is required in order for a presidential contender to be pledged National Convention delegates at either the congressional district or statewide level. How the Democratic Proportional Delegate Allocation Math works.

• 272 district delegates are to be pledged proportionally to presidential contenders based on the primary results in each of the State's 53 congressional districts.
• 144 delegates are to be pledged to presidential contenders based on the primary vote statewide.
  • 90 at-large National Convention delegates
  • 54 Pledged PLEOs

Primary (preliminary)

Sunday 3 May 2020 (presumably) - Pre-primary Caucus

National District-level delegates are slated. Only those participants who sign a pledge of support to a particular candidate may participate.

National Convention District Delegates will be selected from the slate of nominees using a pre-designated order. Once the allocation of district delegates among presidential preferences is determined by the primary, the delegates are selected by their order.

Sunday 21 June 2020 (presumably): Delegation Meeting

National Convention Pledged PLEO and At-Large delegates are elected, by a quorum of the district-level delegates, according to the results of the primary.

The remaining 79 National Convention delegates consist of

• 79 Unpledged PLEO delegates:
• 30 Democratic National Committee members.
• 48 Members of Congress (2 Senators and 46 Representatives).
• 1 Governor.
• 0 Distinguished Party Leaders.

These 79 delegates and will go to the Democratic National Convention officially "Unpledged".