06/16/2014 03:56 pm ET Updated Aug 16, 2014

Pot Attack Ad Hits Colorado Governor's Race

Over the weekend, The Denver Post's Lynn Bartels spotlighted what could be the first ad ever in Colorado attacking a gubernatorial candidate for supporting pot legalization--or any candidate for that matter.

The radio spot hits former congressman Tom Tancredo, who backed Colorado's amendment legalizing marijuana.

But the political ad goes further, bringing up the dreaded slippery slope, and falsely claiming that Tancredo wants to consider legalizing "all drugs."

Bartels reports:

As for the radio ad, it claims Tancredo wants to legalize all drugs, such as heroin, PCP and cocaine, and then it touts Kopp's concern about the legalization of marijuana. Tancredo said he supported the 2012 ballot measure that legalized marijuana but does not support the legalization of hard drugs.

The ad was paid for by Make Colorado Great Again, an independent expenditure committee whose sole donors are former U.S. Sen. Bill Armstrong, a Kopp supporter, and former ambassador Marilyn Ware.

Armstrong, who's President of Colorado Christian University, did not immediately return a call seeking comment on whether he approves of the accusations against Tancredo, who's competing in the Colorado GOP primary against three candidates. The winner of the primary election, June 24, takes on Gov. John Hickenlooper in November.

Listen to the ad here: