Bernie Sanders has pulled off almost a complete turnaround in Wisconsin polls, taking what was once a double-digit deficit to Hillary Clinton and building it into a consistent lead just days before the critical vote.
After a string of victories in caucuses last week --- including blowout margins in Washington, Alaska, and Hawaii --- the Sanders campaign is looking to Tuesday's Wisconsin primary as a chance to continue building momentum toward more difficult contests like New York. A win in Wisconsin is critical for Sanders, and polls point to a come-from-behind victory.
The polling aggregate site FiveThirtyEight now lists Bernie Sanders as the 70 percent favorite based on polls (though a more weighted forecast puts the race at roughly 50-50). A win in Wisconsin could help Sanders cut into Hillary Clinton's large delegate lead, but more importantly could help turn the narrative in his favor and continue to build momentum among voters.
There could be other signs that Bernie Sanders is surging. Seth Abramson, an assistant professor of English at University of New Hampshire, wrote in the Huffington Post that Hillary Clinton is in the midst of a total collapse, with some of her key demographics turning to Bernie Sanders.
"There simply is no evidence available to suggest that Hillary Clinton's robust coalition of nonwhite voters still exists — certainly not in anything like the form it was just four weeks ago. How else to explain an 82-point margin among nonwhite voters in Alabama, and similar margins in every other Southern state, on March 1st, and just a 6-point lead among all Southern Democrats (who are, depending upon the state, between 27 percent and 71 percent African-American) on March 26th?"
"We have received over six million individual campaign contributions averaging 27 dollars apiece -- I believe that is the future of the Democratic Party," Sanders said this week at a rally in Milwaukee (via ABC News).