Legislative roll‐call voting is crucial in policy making. Standard approaches to studying roll‐call voting focus on legislator attributes, ignoring how social factors, such as legislator relations, may drive voting. Using original data based on a state legislature, I adopt a relational approach to examine how legislator relations impact roll‐call voting net of attributes. Results show that relations strongly influence voting, adding significantly to the explanatory power of the models. These results imply that standard approaches to studying roll‐call voting should incorporate consideration of social factors, suggesting the value of social influence models in studies of political phenomena.