Brown, T.
(1988). Migration and politics. Chapel Hill: University of North Carolina Press.
2.
Buenker, J.
(1973). Urban liberalism and progressive reform. New York: Scribner.
3.
Gimpel, J. G.
(1996). National elections and the autonomy of American state party systems. Pittsburgh: University of Pittsburgh Press.
4.
Gimpel, J. G.
(in press). Separate destinations: Migration, immigration and the politics of places. Ann Arbor: University of Michigan Press.
5.
Key, V. O., Jr.
(1949). Southern politics in state and nation. New York: Knopf.
6.
Key, V. O., Jr.
(1956). American state politics: An introduction. New York: Knopf.
7.
King, G.
(1997). A solution to the ecological inference problem. Princeton, NJ: Princeton University Press.
8.
Kleppner, P.
(1983). Voters and parties in the Western states: 1876-1900. Western Historical Quarterly, 13, 49-68.
9.
Kleppner, P.
(1989). Politics without parties. In G. D. Nash & R. W. Etulain (Eds.), The twentieth-century West: Historical interpretations. Albuquerque: University of New Mexico Press.
10.
Mayhew, D. R.
(1986). Placing parties in American politics. Princeton, NJ: Princeton University Press.
11.
Morehouse, S. M.
(1981). State politics, parties and policy. New York: Holt, Rinehart & Winston.
12.
Shefter, M.
(1983). Regional receptivity to reform: The legacy of the progressive era. Political Science Quarterly, 98, 459-483.