Donald Trump responds to plummeting poll numbers by tapping a Rightwing media huckster, with no political experience, from far-right propaganda website Breitbart News, to head up his campaign. Eric Boehlert from Media Matters joins us to explain. Also, desperate North Carolina Republicans ask the U.S. Supreme Court to help them keep their states' 'racially discriminatory' voter suppression law in place through November, while state GOP officials work to adopt new restrictions on voting in lieu of the sweeping election law previously struck down as having 'target[ed] African-Americans with nearly surgical precision'. Also today: New, massive wildfires explode in bone-dry Southern California, sending tens of thousands fleeing; and we say 'Bye-Bye' to a political media legend...