The final Nidaa Tounes figure was up one on the 85 seats provisionally tallied following the October 26 poll.
It comes just two days ahead of a presidential election expected to be won by Nidaa Tounes leader Beji Caid Essebsi, whose party will have to form a coalition government as it fell short of an absolute majority.
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Coming third in the election to the 217-member parliament was the Free Patriotic Union (UPL), led by entrepreneur Slim Riahi, with 16 seats.
The leftist coalition Popular Front coalition took 15, while another 15 parties divided up the balance.
Turnout was 70 percent of registered voters.