(CNN) - South Carolina Lt. Gov. Andre Bauer, who finished fourth among four candidates in Tuesday's gubernatorial Republican primary, announced his endorsement Friday of Rep. Gresham Barrett, the second place finisher.
"I hope the media and the voters take these next two weeks to really look at the candidates: their real records – not just their rhetoric," Bauer said in a statement. "When they do, they will find Gresham Barrett has been a committed conservative soldier in the movement against big government long before it was politically advantageous and that Representative Haley has been misrepresenting her conservative credentials."
Barrett finished more than 25 points behind state Rep. Nikki Haley, who nearly avoided a runoff by receiving about 49 percent of the votes. South Carolina Republicans will return to the polls on June 22 to select their nominee.
Barrett's campaign also on Friday launched its second ad since the runoff campaign began.
The ad, a 30-second spot titled "Runoff," will air statewide. It features Barrett walking alongside a drill sergeant–as he did in his first ad–and accepting praise from the military man.
"You're honest. Conservative. Steady. Not going to take any of their shady political attacks," the sergeant says.
"That's right," Barrett responds.
"You'll cap spending. Create jobs. Junk the tax code. And make South Carolina proud again," the sergeant continues.
"Absolutely," Barrett says.
–CNN Political Producer Peter Hamby contributed to this report