From a reader:

Jonah –
I understand that to you and many other Cornerites, Webb bombed last
night and sounded bitter. But let me tell you something: he was a huge
hit in my extended lower-middle-class Los Angeles-based family. We
ignore the Jacksonians at our peril. They have turned against the war
something fierce.
A lot of people think the American people turned against the Vietnam War
due to all the student movement and the protests. Nope, not even close.
They–ordinary, middle-class Americans–turned against it when it was
clear that overwhelming force would not be used purely for political
reasons. Not seeing any will to win the only way a war can be won, they
wanted out. Same deal here, same result.
Webb’s threat is very real. Forget the “surge”. It may happen, but it’s
happening in a political vacuum. If the President doesn’t get us out of
Iraq by year’s end, the electorate will go searching for whoever will.