This research examines how attributing political ideology (conservative or liberal) to either biological entities or malleable personal choices may affect political attitudes. Specifically, we looked at whether attribution leads to changes in attitudes about the political opposition. It was predicted that attributing political ideology to biology/genetics would lead to less extreme and less negative attitudes about the political opposition as a group in both liberals and conservatives. In an experimental 2x2 design participants read a short vignette about an individual that portrayed political ideology as strongly influenced by biology/genetics or strongly influenced by personal choices. The manipulation lead to differing attitudes about ideological groups when the vignette featured an individual from one's own ideology versus the opposing ideology. Less negative attitudes were expressed about the political opposition when participants read about biology contributing to ideology in regards to a person who does not share their ideology as opposed to biology contributing to ideology in regards to a person who does share their ideology.