Afternoon Fix: President Obama to campaign for Joe Sestak in Philadelphia; Meg Whitman leads Jerry Brown by 7

Make sure to sign up to get "Afternoon Fix" in your e-mail inbox every day by 5 (ish) p.m.!

EARLIER ON THE FIX

Daily Fix Poll: Will Jan Brewer's debate performance be a game-changer?

WHAT YOU MIGHT HAVE MISSED

* President Obama will visit Philadelphia on Sep. 20 to campaign for Rep. Joe Sestak's (D-Pa.) Senate bid against former Rep. Pat Toomey (R).

* Massachusetts Gov. Deval Patrick (D) raised $524,000 in August, while former Harvard Pilgrim Health Care CEO Charlie Baker (R) raised $253,000 and state Treasurer Tim Cahill (I) raised $22,000. Meanwhile, Baker is up with a new TV ad charging that Patrick and Cahill "raised taxes eight times."

* A new Survey USA poll shows former Hewlett Packard CEO Carly Fiorina (R) statistically tied with Sen. Barbara Boxer (D-Calif.), 48 percent to 46 percent. In the gubernatorial race, former eBay CEO Meg Whitman (R) leads state Attorney General Jerry Brown (D) 47 percent to 40 percent.

* Attorney Joe Miller (R) has hired prominent Republican fundraiser Mike Gula to raise money for his Alaska Senate bid.

WHAT YOU SHOULDN'T MISS

* "Meet the Press" has postponed this Sunday's planned Florida Senate debate after former state House Speaker Marco Rubio (R) canceled his appearance due to his father's ill health.

* When Obama visits Milwaukee on Labor Day, gubernatorial hopeful and Milwaukee Mayor Tom Barrett (D) is slated to be in attendance, but Sen. Russ Feingold (D-Wis.), who appeared with Obama in the state last month, will be elsewhere -- a sign that the incumbent senator's camp may be concerned that the president is becoming toxic in the Badger State.

* Colorado Senate nominee Ken Buck (R) has now withdrawn his endorsement of gubernatorial nominee Dan Maes (R), days after several prominent newspaper editorial boards called for Maes to step down. Will more Republicans call for Lt. Gov. Jane Norton (R) or former state Senate Minority Leader Josh Penry (R) to step up, despite Maes' repeated statements that he's not exiting the race?

* Arizona Gov. Jan Brewer (R) won't be participating in any more debates, according to her campaign. That appears to be a good thing for Brewer -- for now.

THE FIX MIX

Vote for change, vote Independence.