LAUSR

Britain’s vote to leave the European Union highlights the importance of White majority opposition to immigration. This article presents the results of a survey experiment examining whether priming an open form of ethno-nationalism based on immigrant assimilation reduces hostility to immigration and support for right-wing populism in Britain. Results show that drawing attention to the idea that assimilation leaves the ethnic majority unchanged significantly reduces hostility to immigration and support for Hard Brexit in the UK. Treatment effects are strongest among UK Independence Party, Brexit and White working-class voters. This is arguably the first example of an experimental treatment leading to more liberal immigration policy preferences.