Political fragmentation and government stability: evidence from local governments in Spain

Carozzi, F.ORCID logo, Cipullo, D. & Repetto, L. (2022). Political fragmentation and government stability: evidence from local governments in Spain. American Economic Journal: Applied Economics, 14(2), 23 - 50. https://doi.org/10.1257/app.20200128
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This paper studies how political fragmentation affects government stability. Using a regression discontinuity design, we show that each additional party with representation in the local parliament increases the probability that the incumbent government is unseated by 5 percentage points. The entry of an additional party affects stability by reducing the probability of a single-party majority and increasing the instability of governments when such a majority is not available. We interpret our results in light of a bargaining model of coalition formation featuring government instability.

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