(CNN) – Comedian Stephen Colbert says it will make a difference whether President Barack Obama or Mitt Romney wins the election in November - but he doesn't know what that difference will be.
"I'm not Ralph Nader. I don't think there's no difference," Colbert said in an interview airing Sunday on NBC's "Meet the Press." "There is a difference. I don't know what the difference is, though."
But he does speculate.
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On Obama, Colbert said there's a possibility he might be "a more aggressive reformer or changer in the second act of his presidency."
"If he wins, I hope he keeps some of the promises he didn't keep the first time," he added.
Colbert said he didn't know how Romney would govern if elected president. "He might govern as a technocrat. That sort of seems to have been his career, as like the guy from Pepsi who comes in to run GM - he can't tell us what he'll do because he hasn't seen the books yet."
"We don't know because he seems absolutely sincere as a moderate, and he also seemed sincere as a severe conservative," Colbert said of Romney, even as he insisted that wasn't a slight. "It's honest confusion, because he has a good shot at winning, and if he does, I hope he's a good president."
Asked if he's ever considered running for political office, Colbert said no way. "I have said terrible things with a straight face on camera. Can you imagine the political ads that could be run against me?"
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