Haiti’s second round presidential vote passed off relatively calmly with only a few incidents – according to the UN mission.
Political newcomer, entertainer Michel Martelly is thought to be slightly ahead but opinion polls show it is tight.
The run-off followed November’s turbulent first round which was marred by unrest and fraud allegations.
Martelly’s rival is the former first lady Mirlande Manigat. Both face a major challenge whoever wins as the impoverished country is still trying to recover from last year’s earthquake.
International donors are hoping Haiti can emerge from the vote with a stable and legitimate leadership able to steer a multi-billion euro reconstruction programme.
UN peacekeepers guarded voting centres in Port-au Prince to be on hand in case of violence between feuding rival supporters.
Preliminary results are due on March 31.