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In a governor's race full of twists and turns, it has now come to this:

A national conservative group — a Super PAC supported by the Koch brothers in the past — is lighting up social media with nine light-hearted ads promoting the Libertarian candidate for governor, Robert Burke, because he wants to legalize marijuana.

The videos almost immediately stoked concerns within Democratic gubernatorial candidate Mary Burke's camp that this was a cynical Republican ploy meant to peel off young voters or confuse people. Five of the nine marijuana ads attack Mary Burke, who is opposing GOP Gov. Scott Walker on Tuesday.

"They know that with the last two polls of the election showing a dead heat, they are pulling out all the dirty tricks to try and save Walker from defeat," said Joe Zepecki, spokesman for Mary Burke.

Robert Burke, the Libertarian candidate, agreed with his namesake on the ads.

He said it is clear that the online videos are aimed at drawing "young liberal voters from Mary Burke to vote for Robert Burke." He continued, "While I endorse the full legalization of cannabis, I do not endorse in any way the message of this ad."

But Walker's folks said Mary Burke's staff must be smoking something because, they noted, there is no evidence linking them to the ads. The first-term governor takes no hits in the marijuana ads.

"Hopefully, once the pizza and Doritos arrive, the Burke campaign will quiet down," said Joe Fadness, executive director of the Republican Party and a frequent spokesman for Walker.

Mary Burke supports medical marijuana while Walker opposes it. Both oppose full legalization.

The American Future Fund began running nine spots -- some 15 seconds and the others 30 -- on Twitter and other social media late last week. The ads were put together by Craft DC, a Washington, D.C.-based PR firm headed by a former GOP operative.

In the first, a stoner type wonders aloud who would make the "Mount Rushmore of Weed." Musicians Snoop Dogg, Bob Marley and Willie Nelson snag the first trio of spots, and Robert Burke will land the final one "after he legalizes marijuana in Wisconsin."

"Vote Robert Burke for governor," the stoner says. "Get Burke, get blazed."

Another one asks, "What's Mary Burke's problem with Mary Jane?" It concludes, "Light it up, take a puff and vote for Robert Burke. Don't vote for the wrong Burke."

Yet one more refers to the Democratic nominee as "Mary the millionaire."

The American Future Fund, which is based in Des Moines, Iowa, is involved in a number of races all around the country, mainly on behalf of Republicans. The group has paid for print ads in Politico on behalf of Walker in the past. The tax-exempt group has often acted as a pass-through for money from conservatives.

It has received national attention this year for running online ads advocating for Sean Haugh, a Libertarian candidate in North Carolina, because of his support for legalizing marijuana. The theme: "Get Haugh, get high."

Officials with the American Future Fund did not return calls last week.

In the past, the group has been part of the network of political groups receiving funding from billionaire brothers Charles and David Koch, who once ran as the vice presidential nominee for the Libertarian Party, through their financial arm Freedom Partners.

“Freedom Partners has not given American Future Fund any grants in the last two years and has no involvement with their current campaign in North Carolina," a spokesman told the Washington Post.

Reached on Friday, Robert Burke had no idea that the "get blazed" ads were running for him.

"This is outstanding," he said. "This is completely new to me."

If nothing else, he said the videos will help elevate the legalization issue. He said any time that he brings up the issue in Wisconsin, there is a lot of interest, even though the topic has been ignored by Democrats and Republicans.

Robert Burke has vowed to pardon all non-violent, small possession marijuana convictions if elected.

"Even if we don't win, you need to pay attention to this issue," he said bluntly.

But Robert Burke -- who later issued a press release distancing himself from the ads -- isn't going to win.

It's left to the campaigns of the two contenders to debate the impact of the videos.

"I don't think it'll have much impact at all," said Zepecki of Mary Burke's campaign. "Folks know whats at stake and how important it is to vote for a new direction with Mary. This is just a silly distraction brought to you by those desperate to enshrine Walker on the Mount Rushmore of Koch Brother water carriers."

Alleigh Marré, an aide to Walker's campaign, suggested it was the Mary Burke campaign that was being silly.

"Burke's campaign has gone from the ridiculous to the absurd," Marré said.