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.
Read more about this topic: Communist Party Of The Netherlands