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.

* The latest Mason-Dixon poll in Nevada shows Sharron Angle leading the pack in the Republican Senate primary, with 32% support.. Danny Tarkanian is second with 24%, and Sue Lowden is a close third with 23%.

* The final Research 2000 poll before Arkansas’ Democratic Senate primary runoff shows Lt. Gov. Bill Halter with a narrow lead over incumbent Sen. Blanche Lincoln. 49% to 45%.

* It appears increasingly likely that Gov. Charlie Crist’s (I) Senate campaign will be dogged by allegations stemming from former party chairman Jim Greer’s arrest on fraud charges last week.

* Democratic hopes of defeating Rep. Michele Bachmann (R-Minn.) this year were bolstered over the weekend when Dems rallied behind state Sen. Tarryl Clark (D), who will not face a primary challenger.

* Sen. John McCain’s (R-Ariz.) re-election bid got a bit of a boost late last week, with the National Rifle Association announcing its endorsement of the senator.

* The results of Alabama’s Republican gubernatorial primary last week were so close, we’re still not sure which two candidates are headed for the runoff election.

* And in Iowa, where Dems had hopes that Sen. Charles Grassley (R) might be vulnerable this year, those hopes are fading. The latest survey from Public Policy Polling shows the incumbent with a pretty huge lead.

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.