A new Des Moines Register poll shows that three of the four Republican candidates would beat President Obama in Iowa if the general election were held today.

Rick Santorum is in a statistical dead heat with Obama—48 percent to Obama’s 44 percent. The picture is similar for Mitt Romney, who would get 46 percent to 44 percent for Obama. Obama would garner 51 percent to Newt Gingrich’s 37 percent in the Hawkeye State.

But Ron Paul would beat Obama with 49 percent to the President's 42 percent, making him the only Republican to beat the margin of error.