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.

* Former Rep. Tom Tancredo (R) made it official yesterday afternoon, announcing that he’s running for governor in Colorado as a member of the extremist American Constitution Party. He has not, however, filed the paperwork with the Colorado secretary of state, nor has he registered as a member of his new party.

* Speaking of Colorado, it looks like Andrew Romanoff won’t be ending his primary challenge to Sen. Michael Bennet (D) anytime soon — the former state House Speaker sold his house so he could loan his campaign $325,000.

* In Wisconsin, right-wing businessman Ron Johnson (R), taking on Sen. Russ Feingold (D), recently disclosed that he owns as much as $315,000 in BP stock. On July 9, Johnson’s campaign said he would move the investments into a blind trust. Yesterday, the far-right candidate started backing away from his pledge.

* In Florida’s Senate Democratic primary, Rep. Kendrick Meek launched his first television ad of the year, going after billionaire Jeff Greene pretty aggressively.

* In Tennessee, the latest Mason-Dixon poll shows Knoxville Mayor Bill Haslam leading the Republican gubernatorial primary with 36% support. Rep. Zach Wamp, who recently raised the specter of seceding from the United States, is second in the poll with 25%. Lt. Gov. Ron Ramsey, who doesn’t believe Islam is a religion, is third with 20%. The winner will likely face businessman Mike McWherter (D) in November.

* In Maryland’s gubernatorial rematch, a Gonzales Research poll shows Gov. Martin O’Malley (D) narrowly leading former Gov. Robert Ehrlich (R), 45% to 42%.

* It’s primary day in Oklahoma, where both parties are holding gubernatorial primaries. Rep. Mary Fallin (R) and state Attorney General Drew Edmondson (D) are expected to win their respective races.

* And let this be a lesson to party activists: if you’re going to remove your opponent’s campaign signs on public property, look for cameras that might catch you in the act.

Our ideas can save democracy... But we need your help! Donate Now!

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.