Today’s installment of campaign-related news items that won’t necessarily generate a post of their own, but may be of interest to political observers:

* In Wisconsin, Rep. Paul Ryan isn’t running for the Senate, but another high-profile Republican is: former Gov. Tommy Thompson, who was Bush’s HHS secretary and a failed presidential candidate in 2008. Still no definitive word on Democratic candidates.

* In a show of campaign finance force, Mitt Romney raised more than $10 million yesterday thanks to a well-organized “call-day” in Las Vegas.

* South Carolina Gov. Nikki Haley (R), whose support is widely sought by 2012 Republican presidential contenders, is furious with Newt Gingrich over his criticism of the House GOP budget plan.

* Struggling and desperate after being tied to the House Republican plan to end Medicare, Jane Corwin (R) is now trying to attack Kathy Hochul (D) for supporting Medicare cuts as part New York’s 26th district special election.

* In South Carolina, Mike Campbell, the chairman of Mike Huckabee’s 2008 campaign in the state, is now shifting his allegiance to Jon Huntsman in the wake of Huckabee’s decision not to run.

* Rep. Rick Berg (R) of North Dakota, following a career in the House that’s spanned four months, is now running for the Senate. He hopes to replace Sen. Kent Conrad (D), who’s retiring.

* In Hawaii, there’s a crowded and competitive Democratic Senate primary, but all four of the Dem contenders lead former Gov. Linda Lingle (R) by double digits in head-to-head match-ups.

* In Indiana, Rep. Mike Pence (R) is the early favorite in next year’s gubernatorial race, but he won’t run unopposed. Former Indiana House Speaker John Gregg (D) has launched his campaign, and Hoosier Dems expect he’ll be a competitive candidate.

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.