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
Parliament of Finland Finland was preceded by the Diet of Finland (; , modern ), which had succeeded the Riksdag of the Estates in 1809. When the unicameral Parliament of Finland was established by the Parliament Act in 1906, Finland was an autonomous grand duchy and principality under the Imperial Russian Tsar, who ruled as the Grand Duke, rather than as an absolute monarch. Universal suffrage and eligibility was implemented first in Finland. Women could both vote and run for office as equals, and this applied also to landless people, with no excluded minorities. The first election to the Parliament was arranged in