Riksdag of the Estates between the monarch and the Riksdag of the Estates, and after 1866 between the monarch and the new Riksdag. In 1866 all the Estates voted in favor of dissolution and at the same time to constitute a new assembly, "Sveriges Riksdag". The four former estates were abolished. The House of Nobility () remains as a quasi-official representation of the Swedish nobility. The modern Centre Party which grew out of the Swedish farmers' movement, could be construed as a modern representation with a traditional bond to the Estate of the Peasants. Following the Finnish War in 1809, Sweden ceded its eastmost
Riksdag members of the Riksdag are elected in the general elections held every four years. All Swedish citizens who turn 18 years old no later than on the day of the election are eligible to vote in and stand for elections. A minimum of 4% of the national vote is required for a party to enter the Riksdag, alternatively 12% or more within a constituency. Substitutes for each deputy are elected at the same time as each election, so by-elections are rare. In the event of a snap election, the newly elected members merely serve the remainder of the four-year term.