This is from a job market paper at Stockholm University, by Sirus Dehdari:
This paper studies the effects of economic distress on support for far-right parties. Using Swedish election data, I show that shocks to unemployment risk among unskilled native-born workers account for 5 to 7 percent of the increased vote share for the Swedish far-right party Sweden Democrats. In areas with an influx of unskilled immigrants equal to a one standard deviation larger than the average influx, the effect of the unemployment risk shock to unskilled native-born workers is exacerbated by almost 140 percent. These findings are in line with theories suggesting that voters attribute their impaired economic status to immigration. Furthermore, I find no effects on voting for other anti-EU and anti-globalization parties, challenging the notion that economic distress increases anti-globalization sentiment. Using detailed survey data, I present suggestive evidence of how increased salience of political issues related to immigration channels economic distress into support for far-right parties, consistent with theories on political opportunity structure and salience of sociocultural political issues.