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

Participation in Puerto Rico's delegate selection process is open voters who wish to participate as Democrats. Participants may not take part in any other party's Presidential Nominating process. Puerto Rico does not have voter registration by party.

Sunday 12 July 2020 (presumably): Puerto Rico Primary. Hours reportedly 8:00a-3:00p AST (1200-1900 UTC). Delegate Pledging: Proportional Primary. Voter Eligibility: Open Primary.

Primary
Source: Comisión Estatal de Elecciones de Puerto Rico.
Status: Official. Retrieved: Tuesday 21 July 2020.
Included in Nationwide vote.

51 of 58 delegates to the Democratic National Convention are pledged to presidential contenders based on the results of today's Puerto Rico Primary. A mandatory 15 percent threshold is required in order for a presidential contender to be pledged National Convention delegates at either the senatorial district or islandwide level. How the Democratic Proportional Delegate Allocation Math works.

• 33 senatorial district delegates (Puerto Rico has no congressional districts) are proportionally pledged to presidential contenders by the Primary. District delegates appear on the ballot and the delegates to the National Convention are selected from the highest vote-getters.
• In addition, 11 at-large and 7 Pledged PLEOs delegates are pledged to presidential contenders according to the islandwide primary vote.
• 11 at-large National Convention delegates
• 7 Pledged PLEOs

Primary
Source: Estatal de Elecciones de Puerto Rico.
Status: Official. Retrieved: Tuesday 4 August 2020.

Due to COVID-19, the Sunday 31 May 2020 State Convention was postponed to 26 July.

Sunday 26 July 2020: State Convention. National Convention Pledged PLEO and At-Large delegates are elected according to the results of the primary. If a candidate qualified to receive District delegates, but failed to slate a sufficient number of delegates, the additional delegates are selected at the State Convention.

The remaining 7 National Convention delegates consist of

• 7 Unpledged PLEO delegates:
• 7 Democratic National Committee members.
• 0 Member of Congress (the Resident Commissioner is a non-voting Delegate in the House of Representatives).
• 0 Governors.
• 0 Distinguished Party Leaders.

These 7 delegates and will go to the Democratic National Convention officially "Unpledged".