Meet the Press Sens. Lindsey Graham (R-S.C.), Joseph R. Biden Jr. (D-Del.). Panel: John Harwood, Andrea Mitchell. Moderator: Brian Williams. 8 a.m. KNBC 74261

This Week With George Stephanopoulos: McCain supporter Sen. Kay Bailey Hutchison (R-Texas); Obama supporter Rep. Edward J. Markey (D-Mass.). Red Cavaney, the American Petroleum Institute. Jeffrey Sachs, the Earth Institute at Columbia University. Panel: Donna Brazile, Matthew Dowd, Cokie Roberts, Sam Donaldson. 8 a.m. KABC 36071

Fox News Sunday With Chris Wallace Obama advisor former Sen. Tom Daschle (D-S.D.) and McCain supporter former Gov. Tom Ridge (R-Penn.). Kathleen Rogers, Earth Day Foundation. Panel: Brit Hume, Nina Easton, Bill Kristol, Juan Williams. 8 a.m. KTTV 67919

Late Edition With Wolf Blitzer: The economy: Obama supporter Gov. Bill Richardson (D-N.M.). The economy: McCain supporter Gov. Tim Pawlenty (R-Minn.). Offshore oil; the economy: Obama supporter Rep. Robert Wexler (D-Fla.); McCain supporter Rep. Eric Cantor (R-Va.). The economy: Obama advisor former Secretary of Labor Robert Reich; McCain advisor Douglas Holtz-Eakin. The hunt for Bin Laden; Iraq: Pakistani journalist-author Ahmed Rashid (”Descent Into Chaos”); Peter Bergen. Panel: Gloria Borger, Amy Walter, Ed Henry. 8 a.m. CNN 303803

Face the Nation: Obama vs. McCain: McCain advisor Carly Fiorina; Obama supporter Gov. Bill Richardson (D-N.M.); John Harris, Politico. 8:30 a.m. KCBS 36280