Artés Caselles, JoaquínJurado, Ignacio2023-06-172023-06-1720180048-582910.1007/s11127-018-0548-yhttps://hdl.handle.net/20.500.14352/12314Some electoral systems favor strong single-party majority governments, while others the formation of coalitions. Having one or the other is likely to afect economic outcomes in ways that are unintended when the electoral rules are approved. In this paper, we show that government fragmentation has large fscal implications. We also provide results that have a causal interpretation. Using a panel of Spanish municipalities, along with a close-elections regression discontinuity design, we fnd that single-party majorities run budgets with a 1.5% point larger primary surplus than that of coalitions. In addition, we show that lower defcits are driven mainly by single-party majority governments’ capacity to raise more revenues. These fndings are robust to several model specifcations.engAtribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/journal articlehttps://doi.org/10.1007/s11127-018-0548-yopen accessC21D72D78H72Fiscal defcitSingle-party majority governmentCoalitionsRegression discontinuityTeoría de la decisiónEconometría (Economía)Economía pública1209.04 Teoría y Proceso de decisión5302 Econometría