DAN BALZ: A Most Poisonous Campaign.

Vice President Biden triggered the latest round Tuesday with lines, that, had they been uttered by a Republican, likely would have set off an even bigger firestorm. Biden told an audience in Virginia that Romney would “unchain” the big banks if he were elected president and then added, “They’re going to put y’all back in chains.”

Biden later tried to temper his language, but the damage was done.

Nice to see the admission that there’s a double-standard.