Warisnagar Assembly constituency is an assembly constituency in Samastipur district in the Indian state of Bihar. The candidates of Rashtriya Janata Dal used to win from this constituency in earlier elections, but from 2010 onwards, the candidates of Janata Dal (United) started winning from here. This assembly seat has influence of members of Koeri, Kurmi and Rajput caste, who are descisive in ensuring victory of a candidate.
