Sunday morning show roundup
As Iowa's Kent Sorenson jumps to Ron Paul ship, rat analogies abound
Could Romney 'train' be derailed by Gingrich? Perry? Someone new?
Virginia primary: Was it so hard for Perry and Gingrich to get on the ballot?
Donald Trump as third-party candidate: Will he woo Americans Elect?
Ron Paul: why racist newsletter flap could hurt him in Iowa
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CNN Late Edition: Defense Secretary Robert Gates. Georgia President Mikheil Saakashvili. Senator Richard Lugar (R-IN), Governor Bill Richardson (D-NM), Represenatative Eric Cantor (R-VA) and Representative Chris Van Hollen (D-MD).