Senate Minority Leader Mitch McConnell walks to the Senate chamber in the US Capitol on Dec. 30, 2012. PHOTO/Molly RILEYMOLLY RILEY/AFP/Getty Images Senate Minority Leader Mitch McConnell  in December 2012.  (Molly Riley/AFP/Getty Images)

Senate Minority Leader Mitch McConnell (R-Ky.) leads his primary opponent by a huge margin, according to a poll conducted for McConnell's campaign.

The Voter/Consumer Research poll shows McConnell ahead of businessman Matt Bevin 68 percent to 21 percent.

Bevin remains largely unknown, rendering early polls not very predictive of the race ahead.

But the poll suggests that McConnell is, at worst, an acceptable option for about two-thirds of Republicans.

"The survey results show that Republican primary voters are comfortable with Mitch McConnell as their choice in the Republican primary and intend to vote for McConnell in 2014," said pollster Jan van Lohuizen.

The poll was conducted Aug. 18-20 among 600 likely GOP primary voters.

Bevin's campaign, meanwhile, referred to a Rasmussen poll that showed McConnell with a 26 percent favorable rating and a 46 percent unfavorable rating.

Those numbers, however, are among all voters nationwide, not among likely GOP primary voters in Kentucky.