[DSRP Evidence](https://dsrpevidence.org/)

# Partisan bias in a sorted party system: A problem of epistemic inequality

## Details

**Authors** Pottle

**Year** 2026

**Publisher** American Journal of Political Science

**Discipline** Political Science

[Read it at the publisher](https://doi.org/10.1111/ajps.70086) 
10.1111/ajps.70086

## In authors' words

### What they found (results)

The paper argues and models that because parties strategically mobilize group identities, members of groups associated with a party suffer greater 'testimonial injustice' -- their claims discounted based on perceived partisanship -- concentrating epistemic harm on marginalized groups.

## Commentary

### In short

Whether a person's testimony is believed depends on the listener's partisan vantage point on the speaker's social group, a perspective-dependent credibility judgment that is causally produced by parties strategically mobilizing group identity.

**Patterns it shows** R, P

**Added** 2026-08-27

**How to cite this** Pottle (2026). Partisan bias in a sorted party system: A problem of epistemic inequality. American Journal of Political Science.