the indiana democratic presidential primary took place on may 6, 2008. it was an open primary with 72 delegates at stake. the winner in each of indiana's nine congressional districts was awarded all of that district's delegates, totaling 47. another 25 delegates were awarded to the statewide winner, hillary clinton. the 72 delegates represented indiana at the democratic national convention in denver, colorado. twelve other unpledged delegates, known as superdelegates, also attended the convention and cast their votes as well.