Debates have been a part of American politics at least since the Lincoln-Douglas Senate tilt became, perhaps unfairly, kind of a standard-setter. Some (Kennedy-Nixon) have been media moments. Some (Bentsen-Quayle) have spawned sound bites that ricocheted through a race. They can entertain. They can inform. As a new debate season kicks off, what does it mean to size them up for substance? Veteran Washington reporter Peter Grier spoke to guest host Gail Russell Chaddock.