Pennsylvanian tells Mark Halperin in Mt. Pleasant how he sees the significance of the conservative leaders’ endorsement.

Santorum: “To my knowledge they’ve never done something like this. The fact that they would have such diversity…but yet they were able to come together and rally in that sense of super majority way…behind a candidate…just hopefully should speak to people who are looking….Hopefully this is the type of information that will encourage them to do what maybe in their hearts they were already thinking of doing.”

Watch the video above.