Riksdag Riksdag of the Estates, by tradition thought to have first assembled in Arboga in 1435, and in 1866 following reforms of the 1809 Instrument of Government that body was transformed into a bicameral legislature with an upper chamber () and a lower chamber (). The most recent general election was held on 9 September 2018. The Swedish word "riksdag", in definite form "riksdagen", is a general term for "parliament" or "assembly", but it is typically only used for Sweden's legislature and certain related institutions. In addition to Sweden's parliament, it is also used for the Parliament of Finland and the
Speaker of the Riksdag alternate and remain members of the Riksdag with voting rights. In case all adult members of the Swedish Royal Family who are in the line of succession to the Throne, as prescribed in the Act of Succession, are out of the country, the Speaker assumes the role of "Regent ad interim" (). This would also be the case if they were all to decease. The Speaker chairs the Riksdag Board (), which deliberates on the organisation of the work of the Riksdag, directs the work of the Riksdag Administration () and decides upon matters of major significance concerning the international