Local officials say the stadium held more than its normal capacity for Denver Bronco football games because many extra seats were placed on the field.
There were constant flashes throughout the stadium from those trying to get a visual record of the event.
When Obama's speech concluded, pyrotechnics spewed from the rear of the podium. Streamers dropped on Obama, his family and running mate Joe Biden and his wife, who joined him in waving to the crowd.
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