Bernie Sanders just got a big win in Wisconsin (there were 96 delegates up for grabs), and this has increased his campaign's momentum onto the nomination. How this is significant is that he's won 7 of the last 8 primary/caucus contests, and that may change the way the race goes. So far Hillary Clinton has been on the defensive, along with The Democrats' establishment, looking for ways to woo Bernie's voters and falling all over themselves.
Face it, people are tired of establishment politics, especially several segments of the Democratic base. We're ready to go big and bold, even if it challenges conventional wisdom. There's too much at stake with corporate fat-cats controlling both party establishments.