In theory, since No Democratic contest is winner-takes-all — unlike the Republican Party, which allows that in some states — all Sanders has to do is stay neck and neck with Clinton, as he did in Illinois, by doing OK on Tuesday in the Eastern state votes, then clinch in June in California, where more than 300 congressional district-level pledged delegates will be elected.Here’s the count: 2,383 delegates are needed to win. As of Friday, according to the Bloomberg delegate trackers, Clinton has 1,930 — including 502 superdelegates to Sanders with 1,189, including 38 superdelegates. There are 1,646 delegates still to be decided  Lynn Sweet Chicago SunTimes .