Republican candidate for lieutenant governor Henry McMaster is getting the endorsement of a repeat visitor to South Carolina who may want to be president.

Rick Santorum will be in the Upstate on Monday to back McMaster in Tuesday's GOP runoff against Mike Campbell.

The move comes as McMaster has two new ads out in the closing days of the race.

"Sen. Santorum is a conservative leader, guided by his faith and unwavering principle," McMaster said of the former Pennsylvania senator who finished third in South Carolina's 2012 Republican presidential preference primary.

McMaster's ads are on multiple media platforms including television with the ad "Family," and radio with the ad "Conservative Leader."

A key image in the TV ad is an photo of McMaster that has Gov. Nikki Haley in the background, though Haley is officially neutral in the race.

McMaster's message says he is "ready to root-out corruption, protect our seniors and fight for lower taxes."

Both ads, which begin running Thursday, highlight McMaster's record as the first Attorney General in the country to fight to stop Obamacare, his campaign said.

Attempts to reach Campbell were unsuccessful, but he posted a message Thursday on his campaign social media page saying "The Campbell Team is continuing to work hard to reach voters!"

McMaster finished first in the four-candidate race with 44 percent. Campbell got into the runoff with 24 percent of the vote after Pat McKinney dropped out ahead of the statewide recount.

Santorum and McMaster will be together Monday at stops in Greer, Spartanburg, and Greenville.

Reach Schuyler Kropf at 937-5551

To listen to the radio ad, click here.