On Morning Joe, Mike Barnicle considers the latest polls out of Iowa that show Senator Ted Cruz (R-TX) and Donald Trump surpassing Ben Carson among likely Republican primary voters. “Paris has changed everything, electorally, in terms of politics in this country. It’s now a combination of fear and anxiety in this country…,” says Mike of Carson’s decline among Republicans, who now seem to prefer someone with a better grasp of foreign policy. Watch the conversation here. Only on MSNBC.