As the presidential race between Democratic candidates Hilary Clinton and Senator Bernie Sanders (I-VT) narrows in Iowa, Morning Joe’s Mike Barnicle sums up a key factor in the drop in support for Clinton: “I’ve never encountered a Democrat who does not believe Hillary Clinton has the credentials and would be a good president of the United States, but there is always an undercurrent of wariness about her.” Listen to Barnicle, Willie Geist, Mika Brzezinski and Joe Scarborough discuss the Democratic candidates vying for the White House and the relevant issues here. Only on MSNBC.