Supply-side economist Arthur Laffer is predicting Republicans will win the White House in a landslide this year, regardless of the nominee. “I would be surprised if the Republicans don’t take 45, 46, 47 states out of the 50,†Laffer told host John Catsimatidis on “The Cats Roundtable†on New York’s AM-970 on Sunday. “I mean, I think we’re going to landslide this election.†Laffer, who served in various positions in the Nixon, Ford and Reagan administrations, said he is bullish on the entire Republican primary field. “When I look at these candidates, I don’t see one of them who wouldn’t...