They've got muck; we've got rakes. TPM Muckraker
"They think they can buy your vote with their unlimited Super PAC money," Colbert says in the ad. "But 'Americans for a Better Tomorrow, Tomorrow' ask, 'what about our unlimited super PAC money?'"
Colbert's PAC wants voters to endorse the governor too, but in a slightly different way.
"Write in Rick Parry," the ad says. "That's Parry with an 'A,' for America ... with an 'A,' for Iowa."
Watch the ad: