The increasing availability of extensive governmental data, technological advancements, and a rising standard for government openness are encouraging global governments to implement open data initiatives. While some governments are actively adapting to these trends, others remain behind, despite the pressure. This research explores the political and administrative reasons behind these differences. By analyzing how local governments in South Korea handled requests for open data from citizens between 2007 and 2016, the study highlights the importance of political competition and administrative strength in fostering government transparency and effectively addressing citizen data requests. The study assesses open government data based on its scope, time, and quality, finding that higher levels of electoral competition and better administrative capabilities contribute to increased transparency and responsiveness. However, the study's use of a regression discontinuity design reveals that the political party controlling local governments had minimal influence on these factors.Related ArticlesHeo, Inhye. 2013. “The Political Economy of Policy Gridlock in South Korea: The Case of the Lee Myung‐bak Government's Green Growth Policy.” Politics & Policy 41(4): 509–35. https://doi.org/10.1111/polp.12029.Heo, Inhye. 2022. “Energy Democratization Policy without Democratization of Policy Governance in South Korea: A Participatory Democracy Perspective.” Politics & Policy 50(4): 834–50. https://doi.org/10.1111/polp.12480.Nam, Aerang, and Christopher M. Weible. 2023. “Examining Experts' Discourse in South Korea's Nuclear Power Policy Making: An Advocacy Coalition Framework Approach to Policy Knowledge.” Politics & Policy 51(2): 201–21. https://doi.org/10.1111/polp.12522.