Backlash in policy attitudes after the election of an extreme political party

This paper studies how public attitudes towards reduced immigration, the signature policy of the far-right Sweden Democrats, respond once the party increases their political representation at the local level. To identify causal effects, we use panel data from 290 municipal election districts and compare otherwise similar elections where the Sweden Democrats either barely win or lose an additional seat. We estimate that a one seat increase for this far-right, anti-immigration party decreases negative attitudes towards immigration by 1.8 or 4.1 percentage points (depending on which national survey we use), contrary to the party’s policy position. Consistent with these attitudinal changes, we find suggestive evidence the Sweden Democrats lose the incumbency advantage experienced by other small parties in Sweden. Exploring possible mechanisms, we find evidence for higher politician turnover and a rise in negative newspaper coverage. These findings demonstrate that political representation can cause an attitudinal backlash as a fringe party and their ideas are placed under closer scrutiny.