I will quote advice that I offered on October 2, 2008:
The best choice for watching a presidential or vice-presidential debate is C-SPAN. Why? C-SPAN’s continuous split-screen lets you see both participants at all times, allowing for all sorts of observations about body language and facial expression.I hope this advice still holds.
Some expect very little from Mitt Romney tonight. Not me. I expect both body language and facial expressions, visible at all times on a split-screen. And I expect that Governor Romney will deliver his “zingers” in a way that makes clear the month-plus of rehearsal he has put into them.
[From the New York Times: “Mr. Romney’s team has concluded that debates are about creating moments and has equipped him with a series of zingers that he has memorized and has been practicing on aides since August.”]