Floods, terrorist attacks and the COVID-19 pandemic: the relationship between the (de)centralisation of power and the rally around the flag
研究了突发灾难（洪水、恐怖袭击、疫情）后，权力集中程度如何影响民众对政府的支持（聚旗效应），发现仅在中央集权国家，疫情严重时执政党表现更好。
This article examines whether rally effects when an unexpected calamity occurs are affected by the degree of (de)centralisation of power. We argue that when the national government is exclusively in charge of the policy affected by the calamity, the rally should be comparatively greater than when the responsibility is shared between several levels of government. The argument is tested using observational data from national legislative and presidential elections after 423 major floods, 226 terrorist attacks and 61 pandemics. We find that it is only in centralised countries that incumbent governments perform better under a more severe pandemic.