In the 1970s, Poulantzas was known, along with Louis Althusser, as a leading Structural Marxist and, while at first a Leninist, eventually became a proponent of eurocommunism.
I 1970'erne var Poulantzas, sammen med Louis Althusser, den ledende repræsentant for strukturalistisk marxisme, men modsat Althusser endte han som eurokommunist.