Appearing late last week on MSNBC’s Morning Joe, Senator Claire McCaskill of Missouri insisted that Democratic presidential candidate Senator Bernie Sanders of Vermont “is too liberal to gather enough votes in this country to become president.” Indeed, responding to the fact that candidate Sanders is not only drawing big, enthusiastic crowds to campaign events in Iowa and New Hampshire, but also pulling within 10 points of frontrunner and party favorite Hillary Clinton in certain state polls, McCaskill said: “It’s not unusual for someone who has an extreme message to have a following.”