The 2020 Hawaii Democratic presidential primary had been scheduled to take place on April 4, 2020, a Saturday, in the Democratic Party primaries for the 2020 presidential election, but in-person voting was cancelled due to the COVID-19 pandemic and mail-in voting was extended to May 22, 2020. Instead, voters had until May 22 to submit mail-in ballots. The Hawaii primary was a closed party-run primary, awarding 33 delegates to the 2020 Democratic National Convention, of which 24 were pledged delegates allocated on the basis of the results of the primary. Voters cast ranked-choice voting ballots, with a voter's ballot counting for two ranked backup choices if their original choice was in last place and below the 15 percent threshold for winning delegates.