 After Obama's large victory in North Carolina and close second in Indiana on May 6, he took the lead in committed superdelegates.The results in those two states made Obama the clear front-runner for the nomination, and he picked up endorsements from 26 superdelegates in the week after those primaries.On August 27 Barack Obama was awarded the Democratic presidential nomination by acclamation at the 2008 Democratic National Convention in Denver, Colorado.