Saturday's vote resulted in the Shiite candidates taking just eight seats in Kuwait's 50-member parliament -- down from the 17 they held since last December's election, Voice of America reported.
Elections officials organized Saturday's vote to replace the legislative body elected in December after a court ruled in June that the results from the earlier ballot were flawed.
One of the main changes to voting in the recent election was a reduction in the number of votes each citizen could cast from four to one.
Opposition groups alleged the change was made to prevent the opposition from gaining a parliamentary majority. Supporters of the change say the measure was designed to prevent political stalemates.