The "populism" of coal miners and Midwest farmers is very classic hard left socialism in this country. Grapes of Wrath and William Jennings Bryan's "cross of gold" speech are just two examples. The modern "pointy headed liberal" left of the big cities, universities and media have heaped scorn on these folk and turned them into Reagan Democrats. A leftist demagogue who could successfully exploit these folks could be really dangerous.
BJ Clinton was a minor version of what type of monster could emerge from such a witches brew. Fortunately he has proved to be only personally venal and corrupt, not a "true believer" in some great crusade. We could easily see our own Ahmadinejad emerge in such a populist movement of the left.
Question, since you're obviously thinking this through. Would the argument along the line of Democrats only capable of nominating candidates of the caliber of a Carter or Clinton be effective in reminding voters of what happens when a Democrat is elected?
I absolutely agree !