After tonight, the Democratic National Convention heads to Denver's Invesco Field for Sen. Barack Obama's acceptance speech.
The party moved Thursday's event to the outdoor stadium to accommodate a larger crowd. The home of the Bronco's football team can hold 80,000 people.
Supporters will see Obama walk out onto an elaborate stage. It's set with columns that resemble the nation's Capitol building and the White House.
The theme for Thursday evening is Obama's campaign slogan, "Change We Can Believe In."