Burner, D. (1968) The Politics of Provincialism: The Democratic Party in Transition 1918-1932. New York: Alfred A. Knopf.
4.
Burnham, W.D. (1970) Critical Elections and the Mainsprings of American Politics. New York: Norton.
5.
--- ( 1965) "The changing shape of the American political universe ." Amer. Pol. Sci. Rev.59: 7-28.
6.
Campbell, A. et al. (1966) Elections and the Political Order. New York: John Wiley and Sons.
7.
Chambers, W. N. and W. D. Burnham [eds.] (1967) The American Party Systems: Stages of Political Development. New York: Oxford Univ. Press.
8.
Epstein, L.D. (1958) Politics in Wisconsin. Madison : Univ. of Wisconsin Press.
9.
Fenton, J.H. (1966) Midwest Politics. New York: Holt, Rinehart and Winston.
10.
Gara, L. (1962) A Short History of Wisconsin. Madison: State Historical Society of Wisconsin.
11.
Hammond, J.L. (1973) "Two sources of error in ecological correlations ." Amer. Soc. Rev.38: 764-777.
12.
--- ( 1972) The Revivalist Political Ethos. Ph.D. Dissertation, University of Chicago.
13.
Johnson, R.T. (1964) Robert M.LaFollette, Jr., and the Decline of the Progressive Party in Wisconsin. Madison: State Historical Society of Wisconsin.
14.
Key, V.O., Jr. (1966) The Responsible Electorate: Rationality in Presidential Voting 1936-1960. New York: Vintage Books.
15.
--- ( 1955) "A theory of critical elections." J. of Politics17: 3-18.
16.
Lubell, S. (1965) The Future of American Politics (3rd ed.). New York. Harper & Row.
17.
Macrae, D., Jr. (1970) Issues and Parties in Legislative Voting. New York: Harper & Row.
18.
--- and J.A. Meldrum (1969) "Factor analysis of aggregate voting statistics ," pp. 487-506 in M. Dogan and S. Rokkan (eds.) Quantitative Ecological Analysis in the Social Sciences. Cambridge, Mass.: MIT Press.
Margulies, H.F. (1962) "Anti-Catholicism in Wisconsin politics." Mid-America64: 51-56.
21.
Mazmanian, D.A. (1974) Third Parties in Presidential Elections. Washington: Brookings.
22.
Pomper, G.M. (1971) "Classification of presidential elections," pp. 178-213 in J. M. Clubb and H. W. Allen (eds.) Electoral Change and Stability in American Political History. New York: Free Press.
23.
Rogin, M.P. (1967) The Intellectuals and McCarthy: The Radical Specter . Cambridge, Mass.: MIT Press.
24.
Sellers, C. (1971) "The equilibrium cycle in two-party politics," pp. 148-177 in J. M. Clubb and H. W. Allen (eds.) Electoral Change and Stability in American Political History. New York: Free Press.
25.
Silva, R.C. (1962) Rum, Religion, and Votes: 1928 Re-Examined. University Park: Pennsylvania State Univ. Press.
26.
Sundquist, J.L. (1973) Dynamics of the Party System: Alignment and Realignment of Political Parties in the United States. Washington: Brookings.