Both Mr Regenvanu's Graon mo Jastis party and Mr Salwai's Reunification Movement for Change party are sitting on eight seats each in the unofficial first count.
These unofficial results have the Vanu'aku Party and the Leaders Party of Vanuatu are close behind on seven seats each.
The preliminary count gives 30 of the 52 seats available to the four leading parties.
Up to 13 other parties and an independent MP appear to have won another 20 seats.
Due to bad weather delaying polling in some constituencies, a number of results are not through yet.