Radical Right (RR) political parties have become increasingly radicalized on immigration across many developed countries. We study whether exposure to slanted (i.e., one-sided) news shifts policy views of RR voters on immigration in Austria. In an online experiment, participants received slanted news about the effects of immigration on the welfare state. We find that anti-immigration news further radicalizes RR voters by reinforcing extreme policy views, while slanted pro-immigration news has no de-radicalizing effect. Surprisingly, balanced news ― presenting both sides ― reduces radicalization. We show that balanced news coverage increases trust, thereby increasing RR voters’ receptiveness to opposing viewpoints.