The Scottish Parliament is the national, unicameral legislature of Scotland. The election of an Labour government in the 1997 United Kingdom general election was followed by the Referendums (Scotland and Wales) Act 1997, which legislated for the 1997 Scottish devolution referendum, a referendum on establishing a devolved Scottish Parliament. 74.3% of voters agreed with the establishment of the Parliament and 63.5% agreed it should have tax-varying powers, which meant that it could adjust income taxes by up to 3%. The Parliament was then established by the Scotland Act 1998.