Sen. Mark Pryor (D-AR) released a new ad this week touting his efforts to make government “smaller.” 

“I’m working to make Washington smarter and smaller,” Pryor says in the ad.

Pryor explains in the spot that he worked with Republicans and Democrats to stop the EPA from implementing regulations on agricultural dust, highlighting a letter he signed in opposition. 

Watch:

According to his Republican challenger Tom Cotton’s campaign however, Pryor’s ad is all hat, no cattle.

The Cotton campaign argued Thursday that while Pryor did sign on to a letter against farm dust regulations, he did little to stop them. A FactCheck.org article notes further that there never was anything to stop, as the EPA “never had any intention to regulate farmers’ dust.”

Additionally, the Cotton campaign highlighted Pryor’s support for big government initiatives such as the $787 billion stimulus, Obamacare, and the Wall Street bailout.

“This is typical Mark Pryor: Talk one way in Arkansas and vote the liberal line in Washington, D.C.,” Cotton campaign spokesman David Ray said in a statement. “For the last six years Senator Pryor has sat idly by and rubber stamped President Obama’s liberal agenda. The only things Arkansans have to thank Senator Pryor for are more taxes, more debt, and more expensive health insurance.”

Recent polls have Cotton with a slight lead over Pryor.