On Saturday evening, Vice President Joe Biden’s son and Delaware attorney general Beau Biden tried to attack presumptive GOP presidential nominee Mitt Romney, but the punch ended up hitting North Carolina’s Democratic Gov. Bev Perdue instead.

“I’ve never met a successful politician who didn’t run again,” Biden said during his keynote address at the North Carolina Democratic Party’s Jefferson-Jackson dinner, in an attempt to attack Romney’s decision against running for re-election after his sole term as Massachusetts’ governor. Biden had characterized that comment as “off script” just before making it.

The crowd “collectively groaned,” according to the Raleigh News and Observer, because Perdue had decided against running for re-election this year.