LAST TICKET: Perry officially in for White House bid; Colbert runs another fake ad in Iowa

The Ticket will live-blog the Republican presidential debate tonight at 9 PM EST. In the meantime, here are the stories we took note of today but didn't give the full blog treatment:

• It's officially official: Rick Perry will announce that he is running for president on Saturday. (Politico)

• Mitt Romney doesn't like to do walk-and-talk interviews with reporters. (YouTube)

• President Obama: 'Last thing we need' is for Congress to return to DC (The Hill)

• Stephen Colbert's Super PAC releases a second Iowa ad for "Rick Parry." (Daily Caller)

• Elizabeth Warren Senate candidacy looking more likely by the day. (Washington Post)

• It's August, which means....angry town hall season! (Politico)

• Liberal magazine defends Romney for saying "corporations are people." (The New Republic)

• Prepare to see more political ads on your Facebook page. (Ben Smith)