Source: NDTV
Some theories. (1) The people of Bihar want Nitish to stay put in Patna. (2) They will give him a 60% majority in the 2015 state elections. He will get two more terms if he wants. (3) There is a upper caste bias in the media that is punishing Nitish for breaking up with the BJP. (4) Nitish has not led strongly enough. You can't become Prime Minister if you are not even running.