Polling stations have also closed in the election of the first Police and Crime Commissioners for Wales' four forces.
The successful candidates for the Dyfed-Powys, Gwent, North Wales and South Wales Police force areas will start work next week, on setting local policing priorities, deciding how the budget should be spent, and appointing and dismissing Chief Constables.
It's an idea introduced by the coalition government designed to increase police accountability.
Counting is due to begin in the morning for all four of Wales' forces, with results expected later on tomorrow. 37 commissioners are also being elected across the border in England.