THURSDAY’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.

* Rep. Joe Sestak (D-Pa.) certainly sounds like a guy getting ready to run against Sen. Arlen Specter in a Democratic primary. (Even if he doesn’t, the talk might push Specter to the left.)

* In an amusing twist, the National Republican Senatorial Committee is going after Specter for his ties to … wait for it … George W. Bush.

* And in related news, with Specter having left the GOP, Republicans are even more worried about Pat Toomey running as their Senate candidate in Pennsylvania. Tom Ridge has been approached, and Rep. Jim Gerlach (R), who intended to run for governor, is facing some pressure to run against Toomey in a primary.

* Expecting Florida Gov. Charlie Crist (R) to run for the Senate, the Democratic Senatorial Campaign Committee has already put together a critical television ad, suggesting Crist wants to go to D.C. so he won’t have to clean up his mess in Florida.

* NRSC chairman John Cornyn (R-Texas) thinks it’s “unlikely” Norm Coleman’s lawsuits will fail in Minnesota. He didn’t explain how he came to believe this, but most of Cornyn’s Republican colleagues disagree.

* If state Attorney General Lisa Madigan (D) challenges Illinois Gov. Pat Quinn (D) next year, it looks like Madigan would enter the race as the favorite.

* And speaking of Illinois, if Sen. Roland Burris (D) runs next year, he’s almost certain to lose, no matter who he faces.

* In Louisiana, a new poll shows scandal-plagued Sen. David Vitter’s (R) approval rating slipping to 58%, a year before he seeks re-election.

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.