When Sen. Barack Obama accepts the Democratic presidential nomination next month in Denver, he'll leave the Pepsi Center — the indoor arena where most of the convention is taking place — and make his acceptance speech at Invesco Field, home of the Denver Broncos.

Officials say it holds 75,000 and expect it to be filled for the convention finale.

In St. Paul, Sen. John McCain is scheduled to accept the Republican nomination in the Xcel Energy Center, home of the convention Sept. 1-4. The X holds 18,000-plus for hockey games, but a massive renovation — with a special stage and seating for the convention and other space dedicated to media coverage — means they won't get that many in to cheer on McCain.

Here are highlights of today's DNC formal announcement.

DENVER — Breaking the mold of traditional political Conventions, the Democratic National Convention Committee (DNCC) today announced that Senator Barack Obama will accept the Democratic nomination for President of the United States at Denver's INVESCO Field at Mile High. INVESCO Field can accommodate more than 75,000 people and will be the site of the 2008 Democratic Convention's final day of programming on Thursday, August 28, 2008.

"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," said Governor Howard Dean, Chairman of the Democratic National Committee (DNC). "Senator Obama's candidacy has generated an enormous amount of excitement and interest, not only in the Democratic Party but also in the 2008 Convention. 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."

"Barack Obama's campaign for change has inspired millions of Americans and brought people into the political process who might never have been involved," said Convention Co-Chair Kansas Governor Kathleen Sebelius. "This change in the Convention program will allow thousands of first-time participants a chance to take part. I can't think of a better Convention finale for our nominee who has made reaching out to voters a hallmark of his campaign."