Parihar is an assembly constituency in Sitamarhi district in the Indian state of Bihar.OverviewAs per Delimitation of Parliamentary and Assembly constituencies Order, 2008, 25. Parihar (Vidhan Sabha constituency) is composed of the following: Parihar community development block; Sonbarsa, Purandaha Rajwara Paschimi, Purandaha Rajwara Purvi, Indarwa, Pipra Parsain, Jainagar, Madhiya, Singhwahini, Bhaluaha, Bishunpur Aadhar and Dostia gram panchayats of Sonbarsha CD Block.Parihar (Vidhan Sabha constituency) is part of 5. Sitamarhi (Lok Sabha constituency).Election resultsIn the 2015 state assembly elections, Gayatri devi of BJP won the newly created 25 Parihar assembly seat defeating her nearest rival Dr. Ramchandra Purve of RJD.