The 2008 HawaiiDemocratic Presidential Caucuses took place on February 19, 2008, with 20 pledged delegates at stake. The winner in each of Hawaii's two congressional districts was awarded all of that district's delegates, totaling 13. Another seven delegates were awarded to both candidates at the Hawaii Democratic Party State Convention on May 23-25, 2008. These 20 delegates represented Hawaii at the Democratic National Convention in Denver, Colorado. Nine other unpledged delegates, known as superdelegates, also attended the convention and cast their votes as well.
The Hawaii Democratic Caucus began with a presidential preference poll taken in the first half hour of the caucus. The results were then tabulated and precinct officers and delegates to the state convention were then elected. Those delegates were bound by the results of the caucus, and there no realignment was permitted between non-viable groups, as in some other caucuses.  The caucus was open to all registered Democrats, and voters not registered with the Democratic Party, as well as new voters who were permitted to register on site. Actual delegates to the national conventions were selected at the Hawaii Democratic Party State Convention, held May 25, 2008.
Hawaii, the state where Barack Obama was born, delivered a massive three-to-one victory for the former U.S. Senator from Illinois. Obama carried all four counties and every island in the state with well over 75 percent of the vote. His worst performance was on Oahu, which contains Honolulu, where he received just under 75 percent.