http://web.wenxuecity.com/BBSView.php?SubID=currentevent&MsgID=195172 )
According to RealclearPolitcs.com, current stand on pledged delegates after WI,HI contest:
Obama: 1190
Hillary: 1033
Total delegates in TX, OH and PA to grab:
228 TX
161 OH
+ 158 PA
-----------------
547 Total
Assuming after contests in TX, OH, PA, Hillary's delegates Y even with Obama's X with Hillary win percentage z% of delegates.
These must hold true:
X = Y
x = (1 - z%) 547 + 1190
Y = z% 547 + 1033
Anwser Z = 64% !
That is, after WI/HI losss, Hillary must win, on average in those 3 states, 64% versus 38% on Obama. (Before WI/HI, odds was 62%) A political "next to impossible"