Whatever credit was due to him was deflected to Rahul Gandhi. Manmohan Singh, in the words of a Gandhi family associate of several decades, chose to surrender his authority and power at the altar of loyalty and obligation to the family that had anointed him.
And, at some point during the second term, the good doctor just gave up the battle.
Although, at his farewell press conference as prime minister in January, Manmohan Singh maintained his government should not be judged by the corruption yardstick alone, an issue he thought had been overblown, and that the country would feel the real benefits of the UPA's policies in the years to come, the ballots had already been cast against his government in the minds of the people.