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Activity Number: 205
Type: Contributed
Date/Time: Monday, August 7, 2006 : 2:00 PM to 3:50 PM
Sponsor: Business and Economics Statistics Section
Abstract - #307539
Title: Do Regular Cycles Occur in American Politics?
Author(s): Samuel Merrill*+ and Bernard Grofman
Companies: Wilkes University and University of California, Irvine
Address: 3024 43rd Court, NW, Olympia, WA, 98502,
Keywords: spectral analysis ; time series ; negative feedback
Abstract:

Are there cycles in American politics (i.e., does the proportion of the Democratic/Republican vote share for president or seat share in Congress rise and fall over extended periods of time and, if so, are the cycles regular?) If so, what is the cycling period? If there are regular cycles, can we construct an integrated model - such as a negative feedback loop - that identifies forces that could generate the observed patterns? We use spectral analysis to test for the presence and length of cycles and develop a voter-party interaction model that depends on the tensions between parties' policy and office motivations and between voters' tendency to sustain incumbents while reacting against extreme policies. We find a plausible fit between the regular cycling that this model projects and the time series of two-party politics in America over the past century and a half.


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