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
First Parliament of the United Kingdom in the Irish Parliament was vacant, then the remaining member for the constituency was automatically chosen for the Westminster Parliament. If both seats were vacant a by-election was held. Monmouthshire (1 County constituency with 2 MPs and one single member Borough constituency) is included in Wales in these tables. Sources for this period may include the county in England. Table 1: Constituencies and MPs, by type and country Table 2: Number of seats per constituency, by type and country First Parliament of the United Kingdom In the first Parliament to be held after the Union of Great Britain and Ireland