TUESDAY’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.

* While Gov. Jon Corzine (D) and Chris Christie (R) battle it out in New Jersey’s gubernatorial campaign, the Sierra Club weighed in on the race yesterday, endorsing independent Chris Daggett.

* Rep. Mark Kirk (R) starts his Senate campaign in Illinois in a reasonably strong position, leading state Treasurer Alexi Giannoulias in a hypothetical match-up, 41% to 38%, in the latest Rasmussen poll.

* There’s a fair amount of speculation about who Florida Gov. Charlie Crist (R) will appoint to replace Sen. Mel Martinez (R-Fla.) until the end of next year, but Rep. Lincoln Diaz-Balart (R-Fla.) announced yesterday he does not want to be considered for the post.

* Speaking of Florida, the state’s Chamber of Commerce released a poll yesterday showing state Attorney General Bill McCollum (R) leading state Chief Financial Officer Alex Sink (D), 43% to 34%, in next year’s gubernatorial race.

* Republicans in Colorado and D.C. haven’t exactly been overwhelmed by their candidates poised to take on Sen. Michael Bennet (D-Colo.) next year. They’ve turned their attention to former Lt. Gov. Jane Norton (R), who is reportedly considering the race.

* And Rep. Michele Bachmann (R-Minn.) will, by all appearances, seek re-election next year, but might she have higher ambitions? Bachmann told a right-wing website this week she would run for president if she felt “that’s what the Lord was calling me to do.”

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.