It seems the left and the likes of Jon Stewart are not the only ones that have resorted to comparing Senate Minority Leader Mitch McConnell and his likeness to a turtle.

Enter one Dwayne Stovall who is one of many mounting a primary challenge to John Cornyn in Texas: McConnell 'Looks And Fights Like A Turtle,' Says Texas GOP Primary Ad:

A Senate Republican primary challenger in Texas is using some unflattering analogies to deride Senate Minority Whip John Cornyn and his partnership with Senate Minority Leader Mitch McConnell -- who, a new ad observes, "looks and fights like a turtle."

Dwayne Stovall, one of Cornyn's several primary challengers, released the ad last week. He chides Cornyn for taking votes that would hurt Texas, saying they would "enslave its children with unconstitutional laws and overwhelming debt."

"And you certainly don't do all this," Stovall tells the camera as a split-screen of McConnell and a cartoon turtle pop on the screen, "to please some guy who looks and fights like a turtle."

A Texas county's Tea Party Straw Poll found Stovall in the lead for the GOP nomination with 42 percent of the 70-some votes. Cornyn earned just 18 percent.

Dave Weigel thinks the ad is going to destroy Cornyn. I'm not holding my breath, but I'd be happy to be proven wrong.