Terrorist Attacks, Cultural Incidents and the Vote for Radical Parties: Analyzing Text from Twitter

64 Pages Posted: 9 Mar 2020 Last revised: 18 Apr 2022

See all articles by Francesco Giavazzi

Francesco Giavazzi

National Bureau of Economic Research (NBER); University of Bocconi - Innocenzo Gasparini Institute for Economic Research (IGIER); Centre for Economic Policy Research (CEPR)

Felix Iglhaut

Bocconi University

Giacomo Lemoli

New York University (NYU)

Gaia Rubera

Bocconi University

Multiple version iconThere are 2 versions of this paper

Date Written: March 2020

Abstract

We study the role of perceived threats from other cultures induced by terrorist attacks and by a criminal event on public discourse and voters’ support for radical right parties. We first develop a rule which allocates Twitter users in Germany to electoral districts and then use a machine learning method to compute measures of textual similarity between the tweets they produce and tweets by accounts of the main German parties. Using the dates of the exogenous events we estimate constituency-level shifts in similarity to party language. We find that following these events Twitter text becomes on average more similar to that of the main radical right party, AfD, while the opposite happens for other parties. Regressing estimated shifts in similarity on changes in vote shares between federal elections we find a significant association. Our results point to the role of perceived threats from other cultures on the success of nationalist parties.

Suggested Citation

Giavazzi, Francesco and Giavazzi, Francesco and Iglhaut, Felix and Lemoli, Giacomo and Rubera, Gaia, Terrorist Attacks, Cultural Incidents and the Vote for Radical Parties: Analyzing Text from Twitter (March 2020). NBER Working Paper No. w26825, Available at SSRN: https://ssrn.com/abstract=3550973

Francesco Giavazzi (Contact Author)

National Bureau of Economic Research (NBER)

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Felix Iglhaut

Bocconi University ( email )

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Giacomo Lemoli

New York University (NYU) ( email )

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Gaia Rubera

Bocconi University ( email )

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