In the last election remember that Herman Cain lead even more strongly than this. What you get in these early polls is the extreme right or extreme left most often who come to strong opinions. The majority is seen in the fact that the leading category in the polls is usually "Undecided".
The scarier to me is that the extreme left, more often than not, is representative of the left as whole moreso than the extreme right.
Either way, I worry more about him being a dark horse candidate like Ross Perot in 1992. It would splinter the right enough that Billary would get elected, which would be the worst thing that could happen this election cycle. If the left chooses a different candidate than Billary then it might be that this would be a good thing, considering the right isn't bringing much to bear in terms of candidates this time around. They may as well run Romney again for the candidates we have seen so far.
So so sad how far we have devolved in terms of political leadership in this country.