Former vice president and presumptive nominee Joe Biden won the primary with 76% of the vote, earning 19 delegates,[1] and crossed the necessary majority of 1,991 delegates to officially win the Democratic nomination three days later during the vote count.

[2] Senator Elizabeth Warren saw her only second-place finish in the 2020 primaries with almost 13% and won 1 delegate,[3] while senator Bernie Sanders came in third with 10%, although Warren had long before withdrawn from the race in March and in difference to Sanders had not sought to win any more delegates.

The District of Columbia was one of eight entities (originally 5 entities, before postponment of several primaries due to the COVID-19 pandemic) holding primaries on June 2, 2020, alongside Indiana, Maryland, Montana, New Mexico, Pennsylvania, Rhode Island and South Dakota.

The 20 pledged delegates to the 2020 Democratic National Convention were allocated proportionally on the basis of the primary results.

[6][7] A pre-primary caucus, in order to designate the different presidential candidates' municipal district-level delegate slates, would have been held at the Walter E. Washington Convention Center on May 9, 2020, but because of the COVID-19 pandemic it was replaced with an online election between April 25 and May 21.