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.

* It’s election day in New York’s 20th, in the special election to fill the House seat left vacant by Sen. Kirsten Gillibrand (D). I’ll have more on the race later today.

* The DSCC launched a new ad today accusing Senate Republicans of a “hit and run with our economy.”

* The DNC has unveiled its new anti-Limbaugh billboard in the talk-show host’s hometown in Florida. After an online contest, the winning phrase appears on the sign: “Americans didn’t vote for a Rush to failure.”

* Democratic leaders in Connecticut are worried about Sen. Chris Dodd’s (D-Conn.) future, and wonder whether he should seek re-election.

* Speaking of Connecticut, former Rep. Rob Simmons is considered the leading Republican contender in next year’s Senate race, but he will likely face a primary opponent or two.

* Rep. Pete Hoekstra (R) announced yesterday that he’ll run for governor in Michigan next year.

* Kentucky Gov. Steve Beshear (D) endorsed Lt. Gov. Daniel Mongiardo’s (D) Senate campaign late last week. State Attorney General Jack Conway (D), a likely primary opponent for Mongiardo, seemed unfazed.

* With Rep. Neil Abercrombie (D) running for governor in Hawaii next year, former Rep. Ed Case (D) will run for the open seat.

* Rep. Tim Ryan (D-Ohio) will reportedly give up his House seat next year to run for lieutenant governor. Ohio’s current lieutenant governor, Lee Fisher (D), is running for the Senate.

* Apparently, Mitt Romney plans to run for president in 2012. What a shocker.

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.