Late TV listings

This Week with George Stephanopoulos. Topic: presidential campaign. Guest: Barack Obama, Democratic candidate for president. . 9 a.m. (5)

Fox News Sunday. Topics: Palin's impact on the McCain campaign; insiders look at the Democrats' plan for victory. Guests: David Axelrod, chief strategist, Obama campaign; Rick Davis, McCain campaign manager. 10 a.m. (25)

NECN Healthweek. Topics: Is Vytorin safe?; exercise improves memory; new breast-cancer screening tool; debate over the drinking age; a Band-Aid that may detect infections; back-to-school health; backpack safety. Guests: Dr. Stephanie Moore, cardiologist, Massachusetts General Hospital; Patti Giuliano, DC, Westwood Family Chiropractic. 10:30 a.m. (NECN)

Face the Nation with Bob Schieffer. Topic: presidential campaign. Guest: John McCain, GOP candidate for president. 10:30 a.m. (4)

Late Edition with Wolf Blitzer. Topics: America votes 2008; Obama vs. McCain; Republican Convention. Guests: Senator Jon Kyl of Arizona; Governor Tim Kaine of Virginia; Senator Barbara Boxer of California; Senator Kay Bailey Hutchison of Texas; Robert Gibbs, Obama campaign adviser; Alex Castellanos, Republican strategist; James Carville, Democratic strategist. 11 a.m. (CNN)

The Chris Matthews Show. Topics: Palin vs. Biden; who will win the key swing voters? Guests: Joe Klein, Time magazine; Andrea Mitchell, NBC News; John Heilemann, New York magazine; and Michele Norris, National Public Radio. 11 a.m. (5)

This Week in Business. Topics: the US economy; Lights Out Boston and other green energy programs; Broad's $400 million gift; companies expand in Massachusetts; casinos back on the table; and Worcester Airport to begin flights to Florida. Guests: Nariman Behravesh, chief economist, Global Insight; Jim Hunt, chief, Environmental and Energy Services, Boston. 12:30 p.m. (NECN)