Since 1966 the legislature holds annual general sessions. Previously, the session in odd-numbered years was of unlimited duration while in even-numbered years the session was limited to 60 calendar days (unless two-thirds of the elected members of each house voted to extend it). A constitutional amendment adopted at the 1974 general election extended the duration of the session held in the even-numbered years to 90 calendar days, still subject to extension by a vote of two-thirds of the elected membership of each house.