FRIDAY’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.

* A new Research 2000 poll of Pennsylvania’s Senate race shows Rep. Joe Sestak (D) with a narrow lead over former Rep. Pat Toomey (R), 43% to 40%. A few weeks ago, Research 2000 found Toomey ahead by five.

* In the first poll of Kentucky’s Senate race taken after revelations about Rand Paul’s (R) extremist worldview, Research 200 shows the GOP candidate with a narrow lead. The results, released late yesterday, has Paul up by three over state Attorney General Jack Conway (D), 44% to 41%.

* In Arkansas’ Democratic Senate primary, Research 2000 shows Lt. Gov. Bill Halter inching past incumbent Sen. Blanche Lincoln, 47% to 44%. In general election match-ups, Rep. John Boozman (R) leads Lincoln by 20 points, while Halter trails Boozman by 11.

* A new Mason-Dixon poll in Nevada shows Senate Majority Leader Harry Reid (D) far more competitive against his increasingly bizarre GOP challengers. Reid trails Sue Lowden by three points (42% to 39%) and leads Sharron Angle (R) by the same margin. In the Republican primary, Lowden now leads Angle by one, 30% to 29%.

* On a related note, as recently as 2006, Nevada Senate hopeful Sharron Angle voiced her support for Prohibition. Angle is also facing new questions about ties to the Church of Scientology.

* A new Ohio Poll shows the state’s very competitive U.S. Senate race about as close as it can be. The survey find Lt. Gov. Lee Fisher (D) with a one-point lead over former Bush Budget Director Rob Portman (R), 47% to 46%,

* The same Ohio Poll shows incumbent Gov. Ted Strickland (D) leading John Kasich (R), 49% to 44%.

* Sen. Joe Lieberman (I-Conn.) hasn’t ruled out supporting former wrestling executive Linda McMahon (R) in this year’s Senate race in his home state.

* And in Wisconsin, Republicans appear to be clearing the field for plastics manufacturer Ron Johnson to take on Sen. Russ Feingold (D) in November. Yesterday, Terrence Wall dropped out, without explanation.

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.