This chapter argues that the party membership in the old Norwegian parties no doubt has declined substantially since 1990; the membership files were reduced by more than 40" from the 1990s to 2012. These changes, however, should not be seen as final proof for the end of the party membership linkage in Norwegian politics. The Socialist Left Party is more left leaning than the social democratic Labour Party and also more sceptical of United States leadership in international politics as well as advocating stronger environmental policies. Labour traditionally had a strong organization and close links to the trade union movement. The Centre Party is the party of farmers and rural voters while the Christian People's Party predominantly mobilizes Christian voters. Parliamentary politics in the post war era has generally been dominated by two blocs the socialist bloc including Labour and the Left Socialist Party and the non-socialist bloc with the parties of the centre and the Conservative Party.