Sunday Talking Heads

ABC's "This Week" -- Rep. Rahm Emanuel, D-Ill.; Gov. Tim Pawlenty, R-Minn.; Ralph Nader, independent presidential candidate.

CBS' "Face the Nation" -- Sen. Joe Lieberman, I-Conn.; retired Gen. Wesley Clark.

NBC's "Meet the Press" -- Govs. Arnold Schwarzenegger, R-Calif., Dave Freudenthal, D-Wyo., and Bill Ritter, D-Colo.

CNN's "Late Edition" -- U.S. Ambassador to Iraq Ryan Crocker; Sen. Mitch McConnell, R-Ky.; Govs. Jon Corzine, D-N.J., and Bobby Jindal, R-La.; Terry McAuliffe, campaign chairman for Hillary Rodham Clinton.

"Fox News Sunday" -- Gov. Ed Rendell, D-Pa.; former Rep. Rob Portman, R-Ohio; Bob Barr, Libertarian presidential candidate.