Powers that be? Political alignment, government formation, and government stability
利用西班牙市政选举数据，研究不同层级政府间的党派对齐如何影响政府组建和稳定性，发现对齐能提高多数党任命市长的概率并降低政府被推翻的风险。
We study how partisan alignment across levels of government affects coalition formation and government stability using a regression discontinuity design and a large dataset of Spanish municipal elections. We document a positive effect of alignment on both government formation and stability. Alignment increases the probability that the most-voted party appoints the mayor and decreases the probability that the government is unseated during the term. Aligned parties also obtain sizeable electoral gains in the next elections. We show that these findings are not the consequence of favoritism in the allocation of transfers towards aligned governments.