Frank Luntz on Ron Paul supporters

Time [6] has an article about Paul's campaign, and it contains this gem from GOP pollster Frank Luntz re: Paul's supporters:

"His supporters are the equivalent of crabgrass," says GOP consultant Frank Luntz. "It's not the grass you want, and it spreads faster than the real stuff. They just like him because he's the most anti-Establishment of all the candidates, the most likely to look at the camera during the debates and say, 'Hey, Washington, f____ you.'"