On NBC's "Meet the Press": Obama campaign adviser Robert Gibbs, Newt Gingrich, former Gov. Arnold Schwarzenegger (R-CA).
On "Fox News Sunday": Sen. Kelly Ayotte (R-NH), Gov. Martin O'Malley (D-MD).
On CBS' "Face the Nation": Obama campaign adviser David Axelrod.
On ABC's "This Week": Robert Gibbs, Romney campaign adviser Ed Gillespie.
On CNN's "State of the Union": Ohio Attorney General Mike DeWine, former Ohio Gov. Ted Strickland, RNC Chairman Reince Priebus and Philadelphia Mayor Michael Nutter.