FRIDAY’S CAMPAIGN ROUND-UP….Today’s installment of campaign-related news items that wouldn’t generate a post of their own, but may be of interest to political observers.

* It’s official: former Rep. Pat Toomey is challenging Sen. Arlen Specter (R-Pa.) in a Republican primary next year.

* It looks like there won’t be a special election to replace Sen. Roland Burris (D-Ill.). That said, new questions surrounding Burris’ appointment keep popping up.

* Louisiana may be a conservative “red” state, but Sen. David Vitter (R) is nevertheless vulnerable.

* It’s going to be difficult for the RNC to go “beyond cutting edge” when its top Internet official resigns.

* If Sen. Dianne Feinstein (D) runs for governor in California next year, she’s the odd-on favorite to win the Democratic nomination. Feinstein has not, however, announced her plans for 2010, and it’s hard to imagine her giving up her role as chair of the Senate Intelligence Committee.

* It looks like Sen. Michael Bennet (D-Colo.) has his first Republican opponent: Weld County District Attorney Ken Buck.

* With a likely eye on 2012, Mike Huckabee will be in South Carolina next month at a rally for Fair Tax supporters.

* Virginia Republicans have seen about enough of state party chairman Jeff Frederick.

Steve Benen

Follow Steve on Twitter @stevebenen. Steve Benen is a producer at MSNBC's The Rachel Maddow Show. He was the principal contributor to the Washington Monthly's Political Animal blog from August 2008 until January 2012.