“…As previous work has shown, however, this is a nontrivial problem: most of the existing results in the literature are negative, demonstrating the nonexistence of vote buying or vote trading equilibria (e.g., Park, 1967;Kadane, 1972;Bernholtz, 1973Bernholtz, , 1974Ferejohn, 1974;Schwartz, 1977Schwartz, , 1981Shubik and Van der Heyden, 1978;Weiss, 1988).…”