What's the extreme left? It can be easily argued that the left has moved over to the right over the past 20 years.
I know it's hard for some to understand but contrary to what Rush says, Obama and Clinton aren't "far left." Obama would have been a moderate/left republican 20 years ago. In fact, many rating sites show Obama to be about as liberal as Nixon. Was Nixon a liberal???
One of Hillary's greatest problems is that the left doesn't like her. She's not far enough to the left. She's extremely hawkish and cozy with all street. You'd think that the "extreme left" which supposedly to you, is controlling the demos would want their front runner to be a pacifist and hammer Wall Street.
So while it's easy to see how the right has moved closer to the reich (Cruz, Rubio, Carson, and Trump). Hell, Reagan would be labeled a RINO and would be tea bagged by Trump if he were running. I'm not seeing this extreme shift of the left over to the Lenin... I mean left on the demo side.