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.

* Connecticut Gov. Jodi Rell (R) announced yesterday she will not seek another term next year. Three top-tier Democrats had already announced their campaigns — Secretary of State Susan Bysiewicz , Stamford Mayor Dannel Malloy and 2006 Senate nominee Ned Lamont — and the leading Republican at this point appears to be Lt. Gov. Michael Fedele. The race quickly became one of the top Democratic pick-up opportunities of 2010.

* MoveOn.org has launched a new ad targeting seven House incumbents who opposed health care reform on Saturday. The spot accuses the lawmakers of having “stood small” while others “stood tall.”

* In Colorado, state Sen. Josh Penry (R) is ending his gubernatorial campaign, and throwing his support to his primary opponent, former Rep. Scott McInnis (R). Penry’s announcement is something of a setback for the national party, which had heavily recruited him. The move sets up a showdown for McInnis against incumbent Gov. Bill Ritter (D) next year.

* The latest Public Policy Polling survey in Maine shows a plurality of Maine Republicans (46%) disapproving of the job Sen. Olympia Snowe (R) is doing. Perhaps more important, if Snowe were to face a more conservative primary challenger, Maine Republicans would vote against Snowe, 59% to 31%.

* In the Senate special election in Massachusetts, frontrunner and state Attorney General Martha Coakley (D) said she wouldn’t vote for a health care reform bill with the Stupak amendment. Coakley’s top Democratic challenger, Rep. Michael Capuano, who voted for the bill, criticized the position.

* In Nevada, former state GOP Chair Sue Lowden’s Senate campaign has taken a hit after laughing about the 1981 assassination attempt on Harry Reid’s life. She’s apparently also facing criticism from Ron Paul fans for having undermined his presidential campaign last year.

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.