About 8,000 voters can cast their ballots over four days before Friday's election.
The publication of first results has raised questions among commentators as it might influence the remaining voters.
The Electoral Commissioner Faimalomatumua said they had decided not to 'sleep on the results' and would continue to count and announce the results each day.
189 candidates, including 21 women, are contesting the 50 seats for a five-year term in the legislative assembly.