Pul, who was contesting on a BJP ticket, polled 5,326 votes while Kri could secure 4,384 votes in the by-poll held on November 19.
The winner is the youngest of three wives of former Arunachal Pradesh chief minister Kalikho Pul. The by-poll was necessitated due to his alleged suicide.
A total of 108 voters opted for NOTA , Chief Electoral Officer Kaling Tayeng said, adding an estimated 72 per cent electorates exercised their franchise in the election.
People's Party of Arunachal (PPA) has 43 MLAs, Congress three and Independents two in the 60-member House.