Authors’ Version Andrea Pilotti and Oscar Mazzoleni Cross-border relations and national-populist politicisation: a citizen perspective Chapter published in Oscar Mazzoleni, Cecilia Biancalana, Andrea Pilotti, Laurent Bernhard, Grégoire Yerly et Lukas Lauener, National Populism and Borders: The Politicisation of Cross-border Mobilisations in Europe, Cheltenham, Edward Elgar Publishing, pp. 166-192.