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:

* Mitt Romney, hoping to undo the self-inflicted damage from yesterday, announced this morning he “is 110 percent behind” Ohio Gov. John Kasich’s (R) measure to restrict the collective bargaining rights. Yesterday, Romney refused to endorse the same proposal.

* Rick Perry, hoping to undo some self-inflicted damage of his own, said in Florida this morning that he was just kidding when he raised questions about President Obama’s birthplace.

* And in still more news related to self-inflicted damage, Herman Cain was asked in Iowa about his position on abortion rights. He’s still screwing it up — Cain said he’s against abortions, without exception, and then added, “A family will make that choice.”

* The National Republican Senatorial Committee is condemning Elizabeth Warren in Massachusetts this week for supporting the efforts of the Occupy Wall Street movement.

* In Nevada, Public Policy Polling shows Mitt Romney narrowly leading Herman Cain in the race for the GOP presidential nomination, 29% to 28%.

* In Ohio, a new Quinnipiac poll shows Cain leading Romney, 28% to 23%.

* The same Quinnipiac poll in Ohio, by the way, shows President Obama in the lead against the top Republican candidates, leading Romney by four, Cain by eight, and Perry by 11.

* Sen. Joe Lieberman (I-Conn.) is now offering encouragement to the Republicans running to replace him in the Senate.

* In New Hampshire, former state Senate Majority Leader Maggie Hassan (D) kicked off her gubernatorial campaign this week.

* And in Missouri, if Lt. Gov. Peter Kinder (R) decides his scandals will prevent him from being an effective gubernatorial candidate next year, look for businessman Dave Spence to run as the Republican nominee instead.

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.