Hegemonic Ideology

How does the hegemonic class manage to maintain its ideology over time?

Hegemony is readjusted and re-negotiated constantly. Gramsci said that it can never be taken for granted, in fact during the post-revolutionary phase (when the labour class has gained control) the function of hegemonic leadership does not disappear but changes its character.
However, he describes two different modes of social control:

Coercive control: manifested through direct force or its threat (needed by a state when its degree of hegemonic leadership is low or fractured);

Consensual control: which arises when individuals voluntarily assimilate the worldview of the dominant group (=hegemonic leadership).