Stephen Colbert : Newt Gingrich has had a lackluster showing in the presidential race . Krason : Romney should step out of the race and support Rick Santorum . He says Mitt Romney ' n't want to broaden his support among Republicans . He won a narrow victory in Ohio and in his home state of Michigan because of moderate Republican voters in urban and suburban areas . Krason : Santorum is the only candidate who can take GOP nomination from Romney .
Stephen Colbert : Newt Gingrich has had a lackluster showing in the presidential race . Krason : Romney should step out of the race and support Rick Santorum . He says Mitt Romney ' n't want to broaden his support among Republicans . Krason : Santorum is the only candidate who can take GOP nomination from Romney .