The Theory of Political Ambiguity

The ambiguity of politicians' words and actions is sometimes attributed to rational seeking of support or votes. Such an explanation must clearly specify the preferences and decision processes among constituents and the calculations by politicians which make ambiguity seem attractive. The leading effort of this sort is Shepsle's lottery theory, in which politicians take probabilistic stands on issues in order to appeal to risk acceptant, expected-utility-maximizing voters. But the lottery theory suffers from several difficulties. Its predictions are not strong; it can at best account for only certain kinds of observed ambiguous behavior; its main condition for the prediction of ambiguity—risk acceptance among constituents—may not be met; and the expected utility model of risky decision making is not well supported by available evidence. An emphasis allocation theory is suggested as an alternative. According to it, ambiguity involves an effort to reduce the salience of conflictual matters (such as specific policy alternatives) in the evaluation of politicians, so that attention will be paid to consensual appeals (peace, prosperity, honesty in government).

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