It’s going to be tough to tell who’s the real Bernie Sanders when he goes on “Saturday Night Live” this weekend with host Larry David, who is a near-dead ringer for the Democratic presidential candidate.

While NBC is mum, Sanders’ senior adviser, Tad Devine, said the senator would be in the Big ­Apple for the telecast.

“We’ll be live in New York,” he told CNN.

The appearance is a no-lose proposition for Sanders, who’s already clobbering Hillary Clinton with young voters and gets a chance to pick up more support.