Competing endorsements?

Bergen County Clerk Kathe Donovan netted the backing of the Sierra Club today, a coveted endorsement.

Add that to her mantle that includes the NJ Laborers Union and, as one backer explains, you have and interesting combo.

“You have the labor union who wants to build everywhere and the Sierra Club who don’t want to build anywhere,” the source said.

Sierra Club Executive Director Jeff Tittel: “Yes and no.”

He said the green club works with labor union in a Blue-Green Alliance to address global warning and energy-efficient building.

“It could be a good project or bad project, they want the jobs,” he said. “We want good projects.”

But to phrase it differently, he said, Donovan does have the backing of those for the Route 92 wetlands thruway and those opposed to it.

Competing endorsements?