On NBC's "Meet the Press": Former Florida Gov. Jeb Bush and Sen. John McCain (R-AZ).
On "Fox News Sunday": Mitt and Ann Romney.
On CNN's "State of the Union": RNC Chairman Reince Priebus, Sen. Kay Bailey Hutchison (R-TX), Wisconsin Gov. Scott Walker and Florida Gov. Rick Scott.
On ABC's "This Week": Virginia Gov. Bob McDonnell, Priebus, LA Mayor Antonio Villaraigosa, chairman of the Democratic National Convention.
On CBS' "Face the Nation": Sen. Marco Rubio (R-FL), Priebus, Rep. Marsha Blackburn (R-TN) and Former Republican Gov. Haley Barbour of Mississippi.