After the unsuccessful General strike in 1918 , proportional representation was introduced which helped the SP gain 41 seats in parliament .
With its foundation in October 1888 , the Social Democratic Party was considered to be the main opposition to the Radicals in government and parliament .
After the unsuccessful General strike in 1918 , proportional representation was introduced which helped the Social Democratic Party gain 41 seats in parliament .
With its foundation in October 1888 , the Social Democratic Party was considered to be the main opposition to the Radicals in government and parliament .