We present a model of party competition that produces more realistic patterns of results than those often emphasized in the literature. Reversing Downs (1957), we assume that parties win elections in order to formulate policies, rather than formulate policies in order to win elections. Voters are modeled first as having perfect information about candidate positions, and then under conditions of uncertainty. In simulation experiments we show that policy motivation and voter uncertainty can bring about persistent and predictable party differences in sequential majority rule elections. As the degree of voter certainty decreases, parties diverge towards their optima, whereas increases in voter certainty draw parties towards cycles in which party positions vary, but predictable issue stances are maintained on the average.

Most political support models imply that in evaluating economic performance, voters use a standard that would provide poor predictions of the future and leave the economy vulnerable to manipulation by vote-hungry politicians. Drawing on macroeconomic theory, we develop a simple standard of evaluation which encompasses a concern not only for current economic outcomes, but also for accurately assessed future consequences of current policies. We find that political support for the president can be explained as well by models that assume that voters use this sophisticated standard as by models that assume voter naivete.Our analysis questions the wisdom of measures typically used to assess voter evaluation of economic performance in a variety of theoretical contexts. The results also help to explain the absence of convincing evidence that governments exploit voter ignorance in manipulating the economy.

Most political support models imply that in evaluating economic performance, voters use a standard that would provide poor predictions of the future and leave the economy vulnerable to manipulation by vote-hungry politicians. Drawing on macroeconomic theory, we develop a simple standard of evaluation which encompasses a concern not only for current economic outcomes, but also for accurately assessed future consequences of current policies. We find that political support for the president can be explained as well by models that assume that voters use this sophisticated standard as by models that assume voter naivete.Our analysis questions the wisdom of measures typically used to assess voter evaluation of economic performance in a variety of theoretical contexts. The results also help to explain the absence of convincing evidence that governments exploit voter ignorance in manipulating the economy.

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