The state party bettered its tally in the 12th Nagaland assembly by two seats against 35 it won last time. It had contested in all the seats.
Congress' electoral luck deserted it as the party could win only eight seats compared to the 18 it won last time.
NPF allies JD(U) and BJP won a seat each. NCP contested 15 but won in four seats, while RJD failed to open its account though it entered the fray in two constituencies.
Elections were held in 59 of the total 60 seats. Election to Teunsang Sadar was countermanded following the death of Congress candidate P Chuba Chang a day before the February 23 polls.
NPF heavyweights who were re-elected today included Chief Minister Neiphiu Rio, who won his Northern Angami seat by a convincing 12671 margin of votes for the sixth consecutive time defeating his Congress rival Kevise Sogotsu.
Former Nagaland Home Minister and NPF candidate Imkong L Impchen, who resigned following his arrest for allegedly carrying over Rs one crore in cash, arms and ammunition besides liquor in his vehicle ahead of the assembly polls, defeated independent candidate T Chalukumba Ao by 5735 votes. Congress candidate for the seat Moatemjen forefeited his deposit getting just 98 votes.