Former New Hampshire Gov. John Sununu on Tuesday blasted a poll that showed GOP hopeful Mitt Romney behind in New Hampshire by 15 points as a "piece of garbage."

During an interview on MSNBC, host Chuck Todd pointed out that the WMUR Granite State Poll (PDF), conducted by the University of New Hampshire Survey Center, had Romney losing to President Barack Obama, 54 percent to 39 percent.

"You know it's a piece of garbage," Sununu replied.

"This is a good pollster," Todd noted. "You can argue that it's not 15."

"I believe it's head to head in New Hampshire," Sununu insisted. "And I've seen enough other polls to tell you that is a piece of garbage."

"This race in new hampshire will be won by Mitt Romney by two to three points," he added. "I'm willing to say that publically and stick by it and I know that it that poll of 15 points is absolutely invalid."

Over the weekend, Republican New Jersey Gov. Chris Christie told ABC News that the many presidential polls showing Obama with an edge over Romney weren't rigged, no matter what so-called “poll truthers” like Sununu, Karl Rove and Dick Morris claimed.

Watch this video from MSNBC's The Daily Rundown, broadcast Oct. 2, 2012.

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