Why Nitish left the CM post in first place?? I mean he was doing a decent job there.
He has ambition to become PM. He parted away from BJP to get secular votes in General Elections. However, it boomeranged on him. Taking moral responsibility of defeat in General Elections, he decided to quit from JOB of CM, only to fool public and gain there sympathy, so that he can be reelected as a CM after a year