Lawrence: Trump-endorsed primary losses show Trump might not pick the next GOP presidential nominee

Tonight on The Last Word: A recent poll finds Democrats leading Republicans on the economy heading into the midterms. Also, a whistleblower reports the Trump Justice Department’s antisemitism probes lacked legal basis. And Donald Trump contradicts son-in-law Jared Kushner on Iran negotiations. Ali Velshi, Bale Dalton, Sherrod Brown, Laurence Tribe, and Lt. Gen. Mark Hertling join Lawrence O’Donnell.