Obama opens up convention

NEW YORK - In a break with tradition, Barack Obama will accept the Democratic presidential nomination at Invesco Field at Mile High, a 76,000-seat stadium, rather than at the site of the party's national convention across Denver.

A special block of "community" tickets will be reserved for Colorado residents, with details on how to get them coming in the next couple of weeks, the Rocky Mountain News reported.

Democratic Party Chairman Howard Dean acknowledged the decision to move Obama's speech on the final night of the Aug. 25-28 convention to the giant open-air football field of the Denver Broncos would raise security challenges, but said he and Denver Mayor John Hickenlooper had agreed such concerns won't deter the change in venue. Dean, in a conference call with reporters, also batted away questions about logistical challenges and added costs the change would produce, saying those things would be worked out in the coming weeks.

Obama, speaking to reporters in St. Louis, said he was excited about the move.

"Sometimes our conventions don't feel like they are open to everybody," Obama said. "For us to be able to do it in Invesco Field is an opportunity for 80,000 people who might otherwise not have been able to participate to get involved."

It won't be the first time a presidential candidate has accepted the nomination in a stadium. On July 15, 1960, John F. Kennedy gave his acceptance speech before tens of thousands at the Los Angeles Coliseum.

Most of the convention will take place at the 21,000-seat Pepsi Center. Construction for the convention was beginning there Monday amid concerns about lagging fundraising and cost overruns. Last month, the convention's host committee reported it was nearly $12 million short of the $40.6 million it had pledged to raise for the effort. Host committee members spoke openly of needing the Obama campaign's help to close the gap.

Dean said the convention was operating on budget, and Obama senior adviser Anita Dunn said the campaign was on board to help. "The fact that the nomination was not decided until the begining of June - clearly many donors would have hung back a little to see if the candidate of their choice was going to get the nomination," Dunn said.

With an influx of younger voters and Hispanics in recent years Colorado, once heavily Republican, is among a handful of states in the mountain West that have been trending Democratic. Both parties view it as a generalelection swing state.