Siraha district is in Madhesh Pradesh. The total population of the district is 635018. There are a total of 422712 eligible voters in the district, of them, 224099 are male and 198611 are female. There are 4 House of Representatives consituencies in the district and 8 provincial constituencies.
Birendra Prasad Mahato (Janata Samajwadi Party) won with 24102 votes in Siraha Constituency 4 defeating Birendra Prasad Saha (Janamat Party) who secured 16294 votes in Federal Parliament Elections 2079.