On the final night of a party’s political convention, after delegates and superdelegates have cast their votes, the presumed nominee becomes the official nominee and delivers an acceptance speech. In the past, the speech has been given at the convention site and, since the mid-20th century, also broadcast nationwide on television.

Today presumed Democratic nominee Barack Obama’s campaign said their candidate will do things a little differently. Instead of accepting his party’s nomination at Denver’s Pepsi Center, site of the Democratic National Convention (DNC), he will give an acceptance speech at the nearby Invesco Field, home to the Denver Broncos, the city’s American football team.

The Pepsi Center fits about 20,000; Invesco Field holds 75,000. “The Democratic Party is nominating a true change candidate this August, and it is only fitting that we make some big changes in how we put on the convention,” DNC chairman Howard Dean said in a statement. “By bringing the last night of the convention out to the people, we will be able to showcase Barack Obama’s positive, people-centered vision for our country in a big way.”

Free tickets will be made available to Colorado residents later this summer. Even though many citizens will be excited at this chance to see the nominee, others likely will be less thrilled, including the news media and security teams, both of whom have been planning their operations for nearly a year and now have to scramble to plan their coverage of Obama’s speech.