Of the 20,831 voters in this assembly constituency, an overwhelming majority of around 18,000 are not tribals.
Among the major winners include Chief Minister Pema Khandu (Mukto seat in Tawang district, bordering China), his third victory in a row.
The district administration, with the help of National Disaster Response Force and Central Reserve Police Force, has intensified relief operation and rescued around 260 people.
The flood situation continued to be critical in Arunachal Pradesh.
The Janata Dal-United won seven seats, the National People's Party five, the Congress four, the People's Party of Arunachal one and Independents two.
The protesters set ablaze the private residence of the deputy chief minister at Niti Vihar and ransacked the office of the deputy commissioner of Itanagar.