Different Chambers, Divergent Rhetoric: Institutional Differences and Policy Representation on Social Media

For the past decade, members of both the House and Senate have increasingly used Twitter to curate a political agenda, but some are better equipped to drive digital policy conversations—even on a public platform with few constraints, low costs, and outsized user discretion. This research note explores the variable digital representation between congressional chambers, using tweets from the 115th Congress to illustrate asymmetric patterns in lawmakers’ rhetorical agendas on Twitter and the role of policy for self-presentation. Senators tweet more frequently, more often about policy, and represent a more diverse agenda on the platform. In this note, we suggest senators’ additional resources and incentives for policy expertise shape important differences in digital engagement, illustrating the prevailing importance of institutional nuance for understanding how lawmakers use Twitter to frame their political reputations.