Update: Tom Tancredo has changed his mind, saying he will have to "welch" on an agreement to smoke marijuana. "I am especially concerned that the publicity may cause my grandkids to have to justify my actions to their peers and afraid that no matter how many times I say I am NOT condoning the use of marijuana, that that message will not get through," he told a local news station

Former congressman Tom Tancredo, a Colorado Republican, will keep a promise to smoke pot, he said Wednesday.

In a film clip promoting a documentary about the pro-legalization movement in the state, comedian Adam Hartle asked Tom Tancredo to share a joint with him if the effort succeeded. "It's a deal!" Tancredo responded.

The conservative 2008 presidential candidate supported Amendment 64, which legalized recreational marijuana use. He even cut a radio ad for the campaign.

"If you really believe what conservatives say they believe -- in less government -- this is a perfect way to express that belief," Tancredo explained to the Denver Westword. "To say, 'I don't think the government has any right to tell me what I should ingest.'"

"Look, I made a bet with the producer of the film that if Amendment 64 passed ( I did not think it would) that I would smoke pot," Tancredo told Fox News. He said it was better than the "stupid dance" Denver Mayor Michael Hancock was forced to perform after losing a football bet to Baltimore mayor Stephanie Rawlings-Blake.

Tancredo later told the Post that "I don't believe it is a 'benign' substance and I don't want to encourage anyone to take it up." Hartle "has agreed that I can make this point clear when we get together for this event," he said.