Rick Santorum on Monday accused his opponent Ted Cruz of not being a social conservative.

The former senator from Pennsylvania told NewsmaxTV's Steve Malzberg Show that social conservative votes are going to Cruz and Republican front-runner Donald Trump, neither of which, he said, "are particularly strong social conservatives."

"Donald Trump has never been a social conservative up until the last few months, and Ted Cruz takes the position, very much a 10th Amendment, states rights, which is, you know, very much Rand Paul, Ron Paul position," Santorum said.

"They're being sold, Ted Cruz says, 'Oh, I'm this social conservative,'" Santorum continued, saying people haven't had a chance to actually look the candidates positions on social issues.

Citing an article in the Iowa Republican which declared Cruz "False Prophet Of Social Conservatism," the former senator said many would look at Cruz and say, "what a minute, he says he's these things, but he's not."

"It's basically that he's not the social conservative that he's portraying himself to be and is the answer is he's not," added Santorum, citing a Politico story where Cruz said on a secret tape at a fundraiser that he wouldn't make fighting same-sex marriage a top three priority in his administration.

"If people want to do drugs in Colorado, it's fine with him," said Santorum. "If people want have different kind of marriages, it's fine with him. He doesn't agree with it. If you want to have an abortion, it's fine with him, he doesn't agree with it, but he's not gonna fight it. That's not what people are looking for. They're looking for someone who has a very clear vision of what's right and what's wrong and be able to lay that vision out for the American people."