membership of the CPN is also given. * separate CPH-Central Committee party. ** estimate of the seats in combined CPN/PSP/(PPR) lists. *** chair of the parliamentary party in the Senate. Municipal and provincial government Although the CPN was particularly strong in several provinces, especially Groningen, it never cooperated in any provincial executive. The party supplied only one mayor, namely Hanneke Jagersma in the CPN stronghold of Beerta. In the late 1940s the CPN participated in several local executives but after the USSR's intervention in Hungary, these all fell. In the 1950s the party got an absolute majority in the municipal council of Finsterwolde the municipality was consequently put under control of the national government. In the 1980s the party again started to cooperate in local executives. The following table shows the results of the provincial election of 1962 by province. It shows the areas where the CPN was strong, namely North Holland and to a lesser extent Groningen and South Holland. The party was very weak in rural and Catholic Limburg and Brabant. Electorate The support for the SDP, which was founded before the introduction of universal suffrage, was strong among leftwing intellectuals and educated working class circles. This was mainly limited to Amsterdam and Rotterdam. With the introduction of universal suffrage, the SDP, and later CPH began to branch out to the poorest circles of the working classes. In the Zaanstreek, around Zaandam and the harbour cities of Amsterdam and Rotterdam the party was especially strong. After the Second World War, the CPN branched out to the poor rural province of Groningen and other poor rural areas like West Friesland. In some Groningen municipalities like Finsterwolde, Beerta, the party won near absolute majorities. In these municipalities, which now form Reiderland the refounded CPN, NCPN still performs particularly well. In the 1950s the general support for the CPN weakened with the rise of Cold War. In the 1960s and 1970s the CPN began to gain support form students. In the 1980s the party lost its working class support. Organization Organizational structure The party was organized on the principle of democratic centralism. The party's board was the highest organ of the party, it decided the order of candidates on election lists for the Senate, House of Representatives and European Parliament, had the final say over the party program and had the ability to expel members. It was elected by the party's