Exit polling from the Wisconsin primary shed some light on which of the three remaining GOP candidates might have the best chance of uniting the Republican party going into November. Voters were asked about their "feelings" if Donald Trump, John Kasich, or Ted Cruz were elected as president.

In response, 41 percent said they would be "excited" or "optimistic" if Trump were elected, while 58 percent said they would be "concerned" or "scared"—for a net score of minus-17 points (41 percent excited/optimistic to 58 percent concerned/scared).

Meanwhile, 48 percent said they would be "excited" or "optimistic" if Kasich were elected, while 47 percent said they would be "concerned" or "scared"—for a net score of +1 point.

Finally, 60 percent said they would be "excited" or "optimistic" if Cruz were elected, while 37 percent said they would be "concerned" or "scared"—for a net score of +23 points.

That is a 40-point swing from Trump to Cruz, with Kasich being pretty much smack in the middle (but slightly closer to Trump).