We derive Nash equilibrium candidate strategies in a double-member district election when voters have nonseparable preferences for candidates in a single-dimensional policy space. When candidates are elected simultaneously, nonseparable voter preferences create multiple equilibria, including some in which candidates adopt extreme positions. The results are robust to limited voter uncertainty about candidate interaction in the legislature. Nonseparable voter preferences create incentives for the formation of political parties and disincentives for candidates to moderate their positions.
Alesina, Alberto
and Howard Rosenthal (1989) `Partisan Cycles in Congressional Elections and the Macroeconomy', American Political Science Review83: 373-398.
2.
Alesina, Alberto
and Howard Rosenthal (1995) Partisan Politics, Divided Government, and the Economy. Cambridge: Cambridge University Press.
3.
Alesina, Alberto
, Morris Fiorina and Howard Rosenthal (1991) `Why Are There So Many Divided Senate Delegations?', National Bureau of Economic Research Working Paper, No. 3663. Cambridge, MA: NBER.
4.
Austen-Smith, David
and Jeffrey Banks (1988) `Elections, Coalitions, and Legislative Outcomes', American Political Science Review82: 405-422.
5.
Austen-Smith, David
and Jeffrey Banks (1991) `Monotonicity in Electoral Systems', American Political Science Review85: 531-538.
6.
Benoit, Jean-Pierre
and Lewis A. Kornhauser (1994) `Social Choice in a Representative Democracy', American Political Science Review88: 185-192.
7.
Black, Duncan
(1958) The Theory of Committees and Elections. Cambridge: Cambridge University Press.
8.
Cornes, Richard
(1992) Duality and Modern Economics. New York: Cambridge University Press.
9.
Cox, Gary W.
(1984a) `Electoral Equilibrium in Double Member Districts', Public Choice44: 443-452.
10.
Cox, Gary W.
(1984b) `Strategic Electoral Choice in Multi-Member Districts: Approval Voting in Practice?', American Journal of Political Science28: 722-738.
11.
Cox, Gary W.
(1987) The Efficient Secret: The Cabinet and the Development of Political Parties in Victorian England. New York: Cambridge University Press.
12.
Cox, Gary W.
(1990a) `Centripetal and Centrifugal Incentives in Electoral Systems', American Journal of Political Science34: 903-935.
13.
Cox, Gary W.
(1990b) `Multicandidate Spatial Competition', in J. M. Enelow and M. J. Hinich (eds) Advances in the Spatial Theory of Voting, pp. 179-197. New York: Cambridge University Press.
14.
Cox, Gary W.
(1994) `Strategic Voting Equilibria Under the Single Nontransferable Vote', American Political Science Review88: 608-621.
15.
Downs, Anthony
(1957) An Economic Theory of Democracy. New York: Harper & Row.
16.
Erickson, Robert
(1988) `The Puzzle of Midterm Loss', Journal of Politics50: 1012-1029.
17.
Fiorina, Morris
(1988) `The Reagan Years: Turning to the Right or Groping Toward the Middle?', in Barry Cooper, Allan Kornberg, and William Mishler (eds) The Resurgence of Conservatism in Anglo-American Democracies. Durham, NC: Duke University Press.
18.
Fiorina, Morris
(1992) Divided Government. New York: Macmillan.
19.
Grofman, Bernard
(1985) `Criteria for Districting: A Social Science Perspective', UCLA Law Review33(1): 77-184.
20.
Kadane, Joseph
(1972) `On Division of the Question', Public Choice13: 47-54.
21.
Kramer, Gerald H.
(1972) `Sophisticated Voting Over Multidimensional Choice Spaces', Journal of Mathematical Sociology2: 165-180.
22.
Krassa, Michael
(1989) `Compositional Voting and the Rational Preference for Polarized Representation', Paper presented at the Electing the Senate Conference, Houston, TX, 1-2 December 1989.
23.
Ordeshook, Peter C.
(1986) Game Theory and Political Theory. New York: Cambridge University Press.
24.
Reed, Steven R.
(1990) `Structure and Behavior: Extending Duverger's Law to the Japanese Case', British Journal of Political Science20: 335-356.
25.
Schwartz, Thomas
(1977) `Collective Choice, Separation of Issues and Vote Trading', American Political Science Review71: 999-1010.
26.
Shugart, Matthew Soberg
(1995) `The Electoral Cycle and Institutional Sources of Divided Government', American Political Science Review9: 327-343.
27.
Silberberg, Eugene
(1990) The Structure of Economics: A Mathematical Analysis. New York: McGraw-Hill.
28.
Taagepera, Rein
and Matthew Soberg Shugart (1989) Seats and Votes: The Effects and Determinants of Electoral Systems. New Haven, CT: Yale University Press.
29.
Varian, Hal
(1984) Microeconomic Analysis, 2nd edn.New York: W. W. Norton.