" When people feel a sense of belonging to a given social group, they absorb the doctrinal positions that the group advocates. However party and religious identification come about, once they take root in early adulthood, they often persist. Partisan identities are enduring features of citizens' self-conceptions. They do not merely come and go with election cycles and campaign ephemera. the public's interest in party politics climbs as elections draw near, but partisan self-conception remain intact during peaks and lulls in party competition. "

― , Partisan Hearts and Minds: Political Parties and the Social Identities of Voters