The centripetal pull of climate: Evidence from European Parliament elections (1989-2019)

Marco Due\~nas, Hector Galindo-Silva and Antoine Mandel
Authors registered in the RePEc Author Service: Marco Duenas

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Abstract: This paper examines the impact of temperature shocks on European Parliament elections. We combine high-resolution climate data with results from parliamentary elections between 1989 and 2019, aggregated at the NUTS-2 regional level. Exploiting exogenous variation in unusually warm and hot days during the months preceding elections, we identify the effect of short-run temperature shocks on voting behaviour. We find that temperature shocks reduce ideological polarisation and increase vote concentration, as voters consolidate around larger, more moderate parties. This aggregated pattern is explained by a gain in support of liberal and, to a lesser extent, social democratic parties, while right-wing parties lose vote share. Consistent with a salience mechanism, complementary analysis of party manifestos shows greater emphasis on climate-related issues in warmer pre-electoral contexts. Overall, our findings indicate that climate shocks can shift party systems toward the centre and weaken political extremes.

Date: 2025-10
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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:2510.01551

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