This study examines whether rising polarization in Americans’ partisan judgments has positive implications for political participation. Drawing on cross-sectional and panel survey data, we find evidence that polarized judgments are related to pre-election intent to vote, as well as to post-election self-reported voter turnout. Polarized evaluations also predict greater reporting of participation in campaign activities beyond voting. Polarization in candidate evaluations consistently has more of an impact than affective polarization. However, our results suggest that polarization in evaluations of both parties and candidates includes an expressive component that does not necessarily translate into political action. Roughly one-quarter to one-third of the actual change in turnout can potentially be attributed to polarization in evaluations of Republican and Democratic presidential candidates.