The revelation incentive for issue engagement in campaigns

Empirical studies have found that although parties focus disproportionately on favorable issues, they also address the same issues—especially, salient issues—through much of the ‘short campaign’. We present a model of multiparty competition with endogenous issue salience where parties behave in line with these patterns in equilibrium. In our model, parties’ issue emphases have two effects: influencing voter priorities, and informing voters about their issue positions. Thus, parties trade off two incentives when choosing issues to emphasize: increasing the importance of favorable issues (‘the salience incentive’), and revealing positions on salient issues to sympathetic voters (‘the revelation incentive’). The relative strength of these two incentives determines how far elections constrain parties to respond to voters’ initial issue priorities.