I don't really have a lot of deep thoughts at the moment. Biden is winning by wide margins everywhere; cities, suburbs, rural areas. Bernie is doing very well among young voters and among some Hispanic communities (though not in Florida) but that isn't really enough to add up to a winning coalition. We're at the point now where the delegate math actually is quite forbidding for Sanders; he'd have to win by big, big margins over the rest of the calendar. I don't know that he's doing his movement a lot of favors by losing states by 10, 20 and 40 points, and I don't think sneaking out a win in Wisconsin under odd circumstances or something would really be enough to change the trajectory.