Document Type

Dissertation

Degree

Doctor of Philosophy

Major

Political Science

Date of Defense

2-20-2026

Graduate Advisor

David Kimball

Committee

Todd Swanstrom

Anita Manion

Yuguo Liao

Abstract

State-level policymaking remains undertheorized relative to its federal counterpart, particularly in states where institutionalized direct democracy creates a parallel channel for policy change outside the legislature. This dissertation develops a novel theoretical framework for the state policy process by adapting punctuated equilibrium theory to American state politics, integrating it with party cartel theory and the concept of legislative policy monopolies. The central argument is that citizen initiatives and legislative referrals are structurally distinct policy venues whose ideological profiles, policy magnitudes, and electoral dynamics are systematically shaped by the partisan context of the legislature. Using Missouri as a case study spanning 1980–2022, the dissertation tests this framework through analysis of 157 ballot measures across 22 election cycles, a period encompassing the state's full transition from Democratic to Republican legislative trifecta control. Liberal initiatives are 3.74 times more likely to appear under Republican-controlled legislatures and conservative initiatives 3.68 times more likely under Democratic control, confirming that the initiative stream functions as a mirror image of legislative majority preferences. Citizen initiatives disproportionately carry punctuated policy changes (72%) while legislative referrals are predominantly incremental (79%). A logistic regression with robust standard errors finds that initiative status and unified party control significantly predict passage, and a three-way interaction demonstrates that initiative success is ideologically asymmetric and regime-dependent, confirmed by period-specific models exploiting the 2003 legislative transition as a natural experiment.

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