Participation is open to all voters who wish to participate as Democrats. Voter registration ends 30 days before the Primary and voters affiliate with the Democratic Party by either voting in the Democratic Primary or signing an affidavit of affiliation.

Tuesday 3 March 2020: Texas Primary. Hours 7:00a-7:00p CST (1300-0100 UTC) / 7:00a-7:00p MST (1400-0200 UTC). Only the area around El Paso is in MST, so the vast majority of polls have closed in TX by 7 PM CST. Delegate Pledging: Proportional Primary. Voter Eligibility: Closed Primary.

Primary
Source: Texas Secretary of State.
Status: Official. Retrieved: Sunday 12 April 2020.
Included in Nationwide vote.

Tier 1. 228 of 260 delegates to the Democratic National Convention are pledged to presidential contenders based on the results of the voting in today's Texas 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.

• 149 district delegates are to be pledged proportionally to presidential contenders based on the primary results in each of the State's 31 Senatorial Districts. Texas has 149 district delegates apportioned among its 31 STATE SENATORIAL DISTRICTS [unlike most states- as well as the Texas Republican Party- Texas Democrats are NOT using the state's Congressional Districts as a basis of National Convention delegate allocation] as follows: (SD= "Senatorial District")].
• 79 delegates are to be pledged to presidential contenders based on the primary vote statewide.
  • 49 at-large National Convention delegates
  • 30 Pledged PLEOs

Primary
Source: Texas Secretary of State.
Status: Official. Retrieved: Sunday 12 April 2020.

Saturday 21 March 2020: Tier 2. Precinct, County, and Senatorial District Conventions select delegates to State Convention.

• County Conventions are held in each county, however, if a county contains multiple state Senate districts, each Senate district will hold its own convention.

Thursday 4 June - Saturday 6 June 2020: Tier 3. State Convention in San Antonio.

Senatorial District Caucuses meet on Friday to elect the 149 National Convention District delegates according to the results of the primary.

The State Convention meets on Saturday to choose the 79 statewide pledged delegates according to the results of the primary.

The remaining 32 National Convention delegates consist of

• 32 Unpledged PLEO delegates:
• 19 Democratic National Committee members.
• 13 Members of Congress (0 Senators and 13 Representatives).
• 0 Governors.
• 0 Distinguished Party Leaders.

These 32 delegates and will go to the Democratic National Convention officially "Unpledged".