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Heilemann: Palin will decide on 'instinct and whim'
Top Talker: The Morning Joe panel – including Time's Mark Halperin, and New York Magazine's John Heilemann – discusses all things Sarah Palin. On Tuesday, Palin's bus tour pulled into Times Square, and she dined on pizza with pal Donald Trump. But is she poised to announce a run, or is she merely trying to strengthen her celebrity?