Former Pennsylvania Gov. Tom Ridge (R) endorsed Mitt Romney for president on Wednesday. 

Ridge had endorsed former Utah Gov. Jon Huntsman for president. He is switching his endorsement to Romney and not Rick Santorum, the former GOP senator from his home state.

Romney, who will be looking for votes in Pennsylvania's primary later this spring, said he was humbled by the endorsement.

"There are few leaders who have such a distinguished record of service to our country. As a combat soldier in Vietnam, he fought with bravery and distinction," Romney said of Ridge, who also previously served as secretary of Homeland Security. 

"As a congressman and governor, he was a tireless servant for Pennsylvania. And as secretary of Homeland Security, he kept our country safe from those who wished to harm us. I am humbled to have his endorsement and welcome Gov. Ridge’s counsel," Romney said.

In the same press release, Ridge highlighted Romney's background as a businessman.

"Given the economic problems that America faces, including Pennsylvania, where high unemployment continues to cause such hardship, his experience turning around failing enterprises makes him precisely what the country needs," Ridge said. "I’m proud to endorse Mitt’s candidacy and will work hard to help him recapture the White House this coming November."

Pennsylvania's presidential primary is April 24.