MONDAY’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.

* RNC members rejected the proposed “purity test” for Republican candidates the other day, and instead “adopted a rule that will prod GOP leaders to provide financial support to only those candidates who support the party’s platform.”

* This isn’t what Michael Steele wanted to see: “Democratic Party committees entered an off-year election with more money in the bank than their Republican counterparts for the first time in at least 18 years, giving the party a financial boost as it tries to stave off a surge by the opposition.”

* Sen. John McCain’s (R) approval rating in his home state of Arizona has fallen to just 40%, the lowest since McCain’s involvement in the Keating Five scandal came to public light nearly 20 years ago. The pollster who conducted the survey, however, still believes the incumbent senator will win his primary fight this year.

* Republicans in the Hoosier state had hoped to see Indiana Secretary of State Todd Rokita (R) take on Sen. Evan Bayh (D) this year, but Rokita announced this morning that he will instead run to succeed retiring Rep. Steve Buyer (R). Rokita will join a crowded GOP primary, but more important, the decision leaves the state party without a credible challenger to take on Bayh.

* Squelching rumors about his future plans, Rep. Lincoln Davis (D-Tenn.) announced today that he will seek re-election in November. Davis’s district leans heavily to the right, but he remains a popular Blue Dog incumbent.

* There are several major statewide primaries in Illinois tomorrow, and things are getting ugly.

* And in Kentucky, home to a competitive Republican Senate primary, most of the GOP establishment has rallied behind Kentucky Secretary of State Trey Grayson, but former half-term Gov. Sarah Palin (R) has thrown her support to right-wing ophthalmologist Rand Paul (R), a political novice. Paul is best known as Rep. Ron Paul’s (R-Tex.) son.

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.