Nebraska caucus votes on March 5, with Bernie Sanders polling 66.52% and Hillary Clinton 33.68% as of March 1. There are 30 delegates. The Maine caucus votes on March 6, with no late polling available. There are 30 delegates. Michigan's primary is March and as of February 17, Hillary was ahead 10 points. There are 148 delegates. Florida's primary is March 15, with Clinton at 59%, Sanders 33%. There are 246 delegates.
The Illinois primary also March 15, finds Sanders trailing Clinton by 11 points. There are 182 delegates. Missouri the same day, no late data available. There are 84 delegates. Also March 15, North Carolina, where Clinton is at 52% to 35% but the race is tightening. There are 121 delegates. Arizona is March 22, with Clinton at 56.2%, Sanders 21.5%. There are 85 delegates. Washington state caucus isn't until March 26, with no meaningful polling numbers to date. There are 118 delegates.
These eight states are not all the primaries and caucuses being held through the month of March but those most likely to yield a significant number of delegates, win, lose or tie. Starting with April tomorrow.