KATHMANDU, MARCH 8 The Rastriya Swatantra Party (RSP) has won all four House of Representatives constituencies in Parsa district, each by a wide margin, according to the Office of the Chief Returning Officer. In Constituency-1, RSP's Buddhi Prasad Pant won with 27,274 votes, defeating CPN-UML candidate Pradeep Yadav by 14,244 votes. In Constituency-2, RSP's Sushil Kumar Kanu secured 30,740 votes against Nepali Congress candidate Ajay Kumar Chaurasiya's 11,890. In Constituency-3, RSP's Ramakant Chaurasiya won with 29,679 votes, ahead of Nepali Congress candidate Surendra Prasad Chaudhary who received 16,366 votes. In Constituency-4, RSP's Tek Bahadur Shakya won with 28,006 votes against Nepali Congress candidate Ramesh Rijal's 12,533.