1. The Disappearing Center: Engaged Citizens, Polarization, and American Democracy;Abramowitz,2010
2. A Socialization Theory of Partisan Realignment;Beck,1974
3. Dynamics of American Political Parties;Brewer,2009
4. Explaining Divided U.S. Senate Delegations, 1788–1996: a realignment approach;Brunell;American Political Science Review,1998
5. Party Systems and the Political Process;Burnham,1967