PORT-AU-PRINCE, Haiti — Less than a week before balloting was scheduled, Haitian authorities postponed the country’s presidential and legislative runoffs because they said they needed to wait for recommendations from a special commission tasked with evaluating the widely criticized electoral process.

In a brief statement issued Monday, Haiti’s Provisional Electoral Council said the vote scheduled for Dec. 27 was postponed until further notice. Council spokesman Roudy Stanley Penn said a new date will be announced once a commission created by presidential decree has concluded its work.

Last week, President Michel Martelly announced that a five-member commission would assess Haiti’s electoral process ahead of the runoffs that opposition factions have threatened to derail because of suspicions of widespread fraud. It was expected to take three days to conclude its review and make recommendations.