This article bridges spatial theory and saliency models to explain how parties choose campaign issues.

Policy Platform Origins

Party platforms are fundamentally shaped by the preferences of activists, core supporters, and target voters. Issues gain disproportionate emphasis when a party's policy positions align with popular stances across all key groups.

Electoral Strategy & Emphasis

But which voters parties prioritize depends on their historical standing - "party size" (electoral success).

Major parties emphasize issues where policies preferred by activists and core supporters also enjoy broad public approval. In contrast, smaller parties focus on distinctive issues even if unpopular with the general electorate.

Empirical Support

Using European campaign data demonstrates this dynamic clearly across multiple empirical approaches.

The findings offer significant explanatory power beyond traditional party typologies or existing theories of issue selection.