The 2008 Illinois Democratic presidential primary took place on Super Tuesday, February 5, 2008, with 153 delegates at stake. The winner in each of Illinois's 19 congressional districts was awarded all of that district's delegates, totaling 100. Another 53 delegates were awarded to the statewide winner, Barack Obama. The 153 delegates represented Illinois at the Democratic National Convention in Denver, Colorado. Thirty-two other unpledged delegates, known as superdelegates, also attended the convention and cast their votes as well.