東京大学政策評価研究教育センター

CREPEDP-142

Number CREPEDP-142
Publication Date August 2023
Title Policy Diffusion Through Elections
Author Hitoshi Shigeoka and Yasutora Watanabe
Abstract Staggered difference-in-differences designs are pervasive in policy evaluations but little is known about the mechanisms of policy diffusion: How and why do such policies spread across jurisdictions? In this study, we highlight the role of elections in policy diffusion in settings where municipal elections are asynchronous due to historical reasons. First, we empirically show the presence of policy diffusion using neighbors’ election cycles as instruments for neighbors’ policy adoption. Second, we further demonstrate interactions of municipalities’ election cycles with neighbors’ adoption and show that they follow neighbors’ policy only during their own election timing, indicating that policy diffuses through elections.
Keywords policy diffusion, elections, subsidy, child healthcare, political budget cycles
Other information Paper in English (40 pages)