Siraha 1 is one of four parliamentary constituencies of Siraha District in Nepal. This constituency came into existence on the Constituency Delimitation Commission (CDC) report submitted on 31 August 2017.[1]
Siraha 1 incorporates Bhagwanpur Rural Municipality, Sakhuwanankar Katti Rural Municipality, Lahan Municipality, wards 2–6 of Laxmipur Patari Rural Municipality and wards 1 and 2 4,5,6of Dhangadhimai Municipality.
It encompasses the following Province No. 2 Provincial Assembly segment