Could 'Beachgate' drive Christie down to single digits in polls?
New Jersey Gov. Chris Christie with his family on the beach (NJ.com)

TRENTON -- Gov. Chris Christie was already the most unpopular governor in the history of New Jersey polling. Then came photos earlier this week that showed he'd hit the beach at Island Beach State Park at a time when the park was closed to the public because of a government shutdown. When asked later in the…