New Delhi: Accusing the Akali Dal-BJP government of 'unprecedented mismanagement' of Punjab, former Prime Minister Manmohan Singh on Monday urged voters to return the Congress to power in the state.

"Punjab has tremendous all round potential but it has not been exploited because of mismanagement by the SAD-BJP government in the last 10 years," Manmohan Singh said at the Congress headquarters here while releasing the party manifesto for the February 4 Punjab assembly polls.