Jurnal Politik Indonesia (Indonesian Journal of Politics)
Vol. 12 No. 1 (2026)

From polarization to personalization: Religion and split-ticket voting in Indonesia

Andrea Prisca Kurnadi (Tunghai University)
Giandi Kartasasmita (Tunghai University, Taiwan
Parahyangan Catholic University, Bandung)



Article Info

Publish Date
27 Jun 2026

Abstract

This article examines how religious affiliation shapes split-ticket voting in Indonesia by comparing the polarized 2019 election with the less polarized 2024 contest. Using individual-level survey data, we estimate logistic regression models. The main specification pools data across election years and includes interaction terms to assess cross-election differences. We complement this with separate models for each election year to facilitate contextual comparison. The analysis focuses on the effect of religious affiliation (Muslim versus non-Muslim) on two forms of cross-ballot behavior: split-party and split-coalition voting. The results indicate that religion was a strong predictor of voting behavior under polarization but weakened significantly in a less polarized context. In 2019, non-Muslim voters were less likely to split their ballots, reflecting consistent alignment across electoral arenas. By contrast, in 2024—when cross-cutting coalitions emerged—the effect of religion declined, no longer predicting split-coalition voting and only modestly influencing split-party behavior. At the same time, evaluative and candidate-centered considerations became more prominent, consistent with patterns of personalistic politics in weakly institutionalized party systems. These findings suggest that religion operates as a context-dependent cue: its constraining effect diminishes as electoral competition shifts from identity-based polarization toward more candidate-centered and personalized forms of voting. The Indonesian case thus demonstrates how variation in polarization conditions the role of identity in shaping electoral behavior.

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Journal Info

Abbrev

POLINDO

Publisher

Subject

Social Sciences

Description

Jurnal Politik Indonesia (Indonesian Journal of Politics - IJP) is a peer-reviewed journal that specifically covers areas of research in Democracy, Governance, Political Thought, Contemporary Politics, Ethics, and Discourse on Justice. Articles that discuss the theoretical aspects of Political ...