There were two Governments of the 18th Dáil, which was elected at the general election held on 7 April 1965. The 11th Government of Ireland (21 April 1965 – 10 November 1966) was led by Seán Lemass as Taoiseach, while the 12th Government of Ireland (10 November 1966 – 2 July 1969) was led by Jack Lynch as Taoiseach. Both were single-party Fianna Fáil governments, which had been in government since the 1957 election. The 11th Government lasted for 568 days and the 12th Government lasted for 965 days.