Please answer the following question: Information:  - The Swedish Trade Union Confederation (literally "National Organisation in Sweden"), commonly referred to as LO, is a national trade union centre, an umbrella organisation for fourteen Swedish trade unions that organise mainly "blue-collar" workers. The Confederation, which gathers in total about 1,5 million employees out of Sweden's 9,6 million people population, was founded in 1898 by blue-collar unions on the initiative of the 1897 Scandinavian Labour Congress and the Swedish Social Democratic Party, which almost exclusively was made up by trade unions. In 2012 union density of Swedish blue-collar workers was 67%, a decline by ten percentage points in six years (union density in 2006: 77%). A strongly contributing factor was the considerably raised fees to union unemployment funds in January 2007 made by the new centre-right government.  - A trade union (British EnglishAustralian EnglishNew Zealand EnglishSouth African English / Caribbean English; also trades union), labour union (Canadian English), or labor union (American English) is an organization of workers who have come together to achieve common goals such as protecting the integrity of its trade, improving safety standards, achieving higher pay and benefits such as health care and retirement, increasing the number of employees an employer assigns to complete the work, and better working conditions. The trade union, through its leadership, bargains with the employer on behalf of union members (rank and file members) and negotiates labour contracts (collective bargaining) with employers. The most common purpose of these associations or unions is "maintaining or improving the conditions of their employment". This may include the negotiation of wages, work rules, complaint procedures, rules governing hiring, firing and promotion of workers, benefits, workplace safety and policies.  - The Swedish Social Democratic Party, (SAP; literally, "Social Democratic Workers' Party of Sweden"), contesting elections as the "ArbetarepartietSocialdemokraterna" ('The Workers' Party  The Social Democrats'), usually referred to just as the 'Social Democrats' ("Socialdemokraterna"); is the oldest and largest political party in Sweden. The current party leader since 2012 is Stefan Löfven; he has also been Prime Minister of Sweden since 2014.  - Karl Edvard Johanson ( 1882 in Förlösa -- 1936 ) was a Swedish trade union organizer . By profession he was a shoemaker , and belonged to the Shoe & Leather Industries Workers Union . He was the chairman of the Swedish Trade Union Confederation from 1930 , when he succeeded Albert Forslund , to 1936 , when he was succeeded by Arvid Thorberg .  - Collective bargaining is a process of negotiation between employers and a group of employees aimed at agreements to regulate working salaries, working conditions, benefits, and other aspects of workers' compensation and rights. The interests of the employees are commonly presented by representatives of a trade union to which the employees belong. The collective agreements reached by these negotiations usually set out wage scales, working hours, training, health and safety, overtime, grievance mechanisms, and rights to participate in workplace or company affairs.  - Arvid Thorberg (born 1877, Kärrbo, d. 1930) was a Swedish trade union organizer. By profession he was a carpenter, and belonged to the Wood Workers Union. He was the chairman of the Swedish Trade Union Confederation from 1920-1930.  - Albert Forslund (born 1881, Ovansjö, d. 1954) was a Swedish Social Democratic politician and trade union organizer. He belonged to the Railwaymens' Union. He became the chairman of the Swedish Trade Union Confederation (LO) from 1936. In the same year, he was appointed Minister of Communications, and thus left his post as LO chairman.    After reading the paragraphs above, we are interested in knowing the entity with which 'edvard johanson' exhibits the relationship of 'member of political party'. Find the answer from the choices below.  Choices: - labour union  - social democratic party  - social democrats  - swedish social democratic party  - the initiative  - union
Answer:
swedish social democratic party