Following a change of government at the February 1974 election, the new Labour administration published a white paper "" based on the final report in September 1974. The white paper led directly to the unsuccessful Scotland and Wales Bill, which was withdrawn in February 1977. Two separate pieces of legislation were passed in the following year: the Scotland Act 1978 and the Wales Act 1978. The provisions of the Acts would not come into force unless approved by referendums, and accordingly Scottish and Welsh devolution referendums were held on 1 March 1979. The Welsh assembly was rejected by a majority of voters, while Scottish devolution was supported by 51.6% of those voting, or 32.9% of those on the electoral register. An amendment to the Scotland Act, introduced by government backbencher George Cunningham, had specified that it must have the support of 40% of the entire electorate, and the referendum was lost. The results of the referendums led to the repeal of the respective Acts in March 1979. A vote of no confidence was subsequently lost by the government on 28 March when the Scottish National Party voted with the Conservatives, Liberals and Ulster Unionist Party, leading to the general election of 1979 and the beginning of 18 years of Conservative rule.