On NBC's "Meet the Press": Connecticut Gov. Dannel Malloy (D), Sen. Dianne Feinstein (D-CA), New York Mayor Michael Bloomberg and Randi Weingarten, president of the American Federation of Teachers.
On CNN's "State of the Union:" Colorado Gov. John Hickenlooper (D), Connecticut Gov. Dannel Malloy (D), Sen. Richard Blumenthal (D-CT), Rep. Chris Murphy (D-CT); Stephen Barton, Aurora, Colo. shooting victim.
On "Fox News Sunday": Sens. Dick Durbin (D-IL) and Joe Lieberman (I-CT) and Rep. Louie Gohmert (R-TX).
On ABC's "This Week": Malloy, Blumenthal, Murphy, Reps. Jason Chaffetz (R-UT) and Donna Edwards (D-MD) and Mayor Pedro Segarra of Hartford, Connecticut.
On CBS' "Face the Nation": Malloy, Connecticut state police Lt. Paul Vance, Sens. Chuck Schumer (D-NY) and Kay Bailey Hutchison (R-TX).