ABC’s “This Week” — House Speaker Nancy Pelosi, D-Calif., and former Gov.

ABC’s “This Week” — House Speaker Nancy Pelosi, D-Calif., and former Gov. Tom Ridge, R-Pa.; David Gergen, former White House adviser.

CBS’ “Face the Nation” — Former Treasury Secretary Robert Rubin; Carly Fiorina, adviser to John McCain’s campaign.

NBC’s “Meet the Press” — Sens. John Kerry, D-Mass., and Joe Lieberman, I-Conn.

CNN’s “Late Edition” — Sen. Claire McCaskill, D-Mo.; former Rep. Rob Portman, R-Ohio; Kenneth Blackwell, former Ohio secretary of state; Ron Kirk, former Dallas mayor; Maj. Gen. Mark Hertling, the commander of U.S. forces in northern Iraq; Tzipi Livni, Israeli foreign minister; James K. Glassman, undersecretary of state for public diplomacy and public affairs; Laura Tyson, adviser to Barack Obama; Nancy Pfotenhauer, adviser to McCain.