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Political Stock Markets and Unreliable Polls


  • Bohm, Peter
  • Sonnegard, Joakim


A political stock market (PSM) clearly beat the polls in predicting the outcome of a Swedish referendum on whether or not Sweden should join the European Union. In fact, polls were unable to make such predictions since the number of undecided respondents always far exceeded the observed YES/NO margin. However, an obstacle to PSMs serving as a superior forecasting instrument is that they can be sensitive to price distortions--by interest groups that may wish to effectuate, and pay for, such distortions--or forecast competitions tied to PSM trade gains, the latter of which was tested here. Copyright 1999 by The editors of the Scandinavian Journal of Economics.

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  • Bohm, Peter & Sonnegard, Joakim, 1999. " Political Stock Markets and Unreliable Polls," Scandinavian Journal of Economics, Wiley Blackwell, vol. 101(2), pages 205-222, June.
  • Handle: RePEc:bla:scandj:v:101:y:1999:i:2:p:205-22

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    References listed on IDEAS

    1. Carmen M. Reinhart & Graciela L. Kaminsky, 1999. "The Twin Crises: The Causes of Banking and Balance-of-Payments Problems," American Economic Review, American Economic Association, vol. 89(3), pages 473-500, June.
    2. Obstfeld, Maurice, 1997. "Destabilizing effects of exchange-rate escape clauses," Journal of International Economics, Elsevier, vol. 43(1-2), pages 61-77, August.
    3. Bensaid, Bernard & Jeanne, Olivier, 1997. "The instability of fixed exchange rate systems when raising the nominal interest rate is costly," European Economic Review, Elsevier, vol. 41(8), pages 1461-1478, August.
    4. Claessens, Stijn, 1991. "Balance of payments crises in an optimal portfolio model," European Economic Review, Elsevier, vol. 35(1), pages 81-101, January.
    5. Douglas W. Diamond & Philip H. Dybvig, 2000. "Bank runs, deposit insurance, and liquidity," Quarterly Review, Federal Reserve Bank of Minneapolis, issue Win, pages 14-23.
    6. Flood, Robert P. & Garber, Peter M., 1984. "Collapsing exchange-rate regimes : Some linear examples," Journal of International Economics, Elsevier, vol. 17(1-2), pages 1-13, August.
    7. Grilli, Vittorio U., 1986. "Buying and selling attacks on fixed exchange rate systems," Journal of International Economics, Elsevier, vol. 20(1-2), pages 143-156, February.
    8. Carmen M. Reinhart & Sara Calvo, 1996. "Capital Flows to Latin America: Is There Evidence of Contagion Effects?," Peterson Institute Press: Chapters,in: Guillermo A. Calvo & Morris Goldstein & Eduard Hochreiter (ed.), Private Capital Flows to Emerging Markets After the Mexican Crisis, pages 151-171 Peterson Institute for International Economics.
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    Cited by:

    1. Robert Kast & Stéphane Luchini, 2002. "Calcul économique et incertitude socio-politique : une procédure d’évaluation des projets publics," Économie et Prévision, Programme National Persée, vol. 156(5), pages 73-84.
    2. Jan Hansen & Carsten Schmidt & Martin Strobel, 2004. "Manipulation in political stock markets - preconditions and evidence," Applied Economics Letters, Taylor & Francis Journals, vol. 11(7), pages 459-463.
    3. Mikuláš Gangur & Miroslav Plevný, 2014. "Tools for Consumer Rights Protection in the Prediction of Electronic Virtual Market and Technological Changes," The AMFITEATRU ECONOMIC journal, Academy of Economic Studies - Bucharest, Romania, vol. 16(36), pages 578-578, May.
    4. Berlemann, Michael & Schmidt, Carsten, 2001. "Predictive accuracy of political stock markets: Empirical evidence from an European perspective," Dresden Discussion Paper Series in Economics 05/01, Technische Universität Dresden, Faculty of Business and Economics, Department of Economics.
    5. Subhani, Muhammad Imtiaz & Hasan, Syed Akif & Osman, Ms. Amber, 2012. "Is Sudden News an Origin of More Systematic Risk in Common Stocks?," MPRA Paper 45139, University Library of Munich, Germany.

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