Rick Santorum insists that if Mitt Romney wins the GOP nomination, that his support of the individual mandate – the centerpiece of Obamacare – will lead to a crushing Republican defeat this fall by Barack Obama.

With Republican primaries set for Tuesday in Wisconsin, Maryland and the District of Columbia, Santorum told CNN’s John King that Romney created the “blueprint” for
Obamacare.

Santorum told King: “… We have seen in the last week, the centerpiece issue in this election is Obamacare and the enormous burden it is on our economy, what it’s doing to drive up unemployment, what it’s doing to explode the federal budget, as well as to explode the deficit, and, of course, the impingement upon liberty, both economic liberty and our religious liberties.