Poll: Which Senate Incumbents Are Most Vulnerable?

GOP Political Insiders Dan Allen, Stan Anderson, Gary Andres, Saulius (Saul) Anuzis, Rich Ashooh, Whit Ayres, Brett Bader, Mitch Bainwol, Brian Baker, Gary Bauer, David Beckwith, Paul Bennecke, Clark Benson, Wayne Berman, Brian Bieron, Charlie Black, Kirk Blalock, Carmine Boal, Jeff Boeyink, Ron Bonjean, Jeff Buley, Luke Byars, Nick Calio, Al Cardenas, Danny Carroll, Alex Castellanos, Ron Christie, Jim Cicconi, Jonathan Collegio, Rob Collins, Cesar Conda, Jake Corman, Scott Cottington, Jay Cranford, Greg Crist, Diane Crookham-Johnson, Fergus Cullen, Tom Davis, Mike Dennehy, Ken Duberstein, Debi Durham, Sara Fagen, Frank Fahrenkopf, John Feehery, Don Fierce, Mindy Finn, Carl Forti, Alex Gage, Bruce A. Gates, Sam Geduldig, Adam Geller, Benjamin Ginsberg, David Girard-diCarlo, Bill Greener, Jonathan Grella, Lanny Griffith, Janet Mullins Grissom, Doug Gross, Todd Harris, Steve Hart, Christopher Healy, Ralph Hellmann, Chris Henick, Terry Holt, David Iannelli, Ed Ingle, Jim Innocenzi, Clark Judge, David Keating, David Kensinger, Bob Kjellander, Ed Kutler, Chris LaCivita, Jim Lake, Steven Law, Steve Lombardo, Kevin Madden, Joel Maiola, Gary Maloney, David Marin, Mary Matalin, Dan Mattoon, Brian McCormack, Mark McKinnon, Kyle McSlarrow, Ken Mehlman, Jim Merrill, Lisa Camooso Miller, Tim Morrison, Mike Murphy, Phil Musser, Ron Nehring, Terry Nelson, Neil Newhouse, David Norcross, Ziad Ojakli, Jack Oliver, Todd Olsen, Kevin O'Neill, Connie Partoyan, Billy Piper, Van B. Poole, Tom Rath, Scott Reed, David Rehr, Tom Reynolds, Steve Roberts, Jason Roe, David Roederer, Dan Schnur, Russ Schriefer, Rich Schwarm, Brent Seaborn, Rick Shelby, Andrew Shore, Kevin Shuvalov, Don Sipple, Ken Spain, Fred Steeper, Bob Stevenson, Terry Sullivan, David Tamasi, Eric Tanenblatt, Richard Temple, Heath Thompson, Jay Timmons, Warren Tompkins, Ted Van Der Meid, Dirk van Dongen, Jan van Lohuizen, Stewart Verdery, Dick Wadhams, John Weaver, Lezlee Westine, Dave Winston, Ginny Wolfe, Fred Wszolek, and Matthew Zablud.