The Virginian-Pilot, on Jerry Kilgore’s “Hitler” ads:
Political scientist Mark Rozell said it’s too early to tell what the effect of the ads will be.
“There is a point at which it can all go too far and there can be a backlash effect” against the advertiser rather than the target, said the George Mason University professor.
Rozell said “it’s hard to go any lower than Hitler,” but he added that the effect of the ads may be determined by Kaine’s response or lack thereof.
Emphasis mine.