Congressional Bipartisanship Scores by Member and Issue Area, 1983–2024 Monday, June 15, 2026 Although bipartisanship has often been considered a cornerstone of effective lawmaking, researchers have struggled to measure it consistently across time and issue areas, making it difficult to build off of each other's work and have constructive conversations about the topic. In this Center for Effective Lawmaking (CEL) working paper, Mackenzie Dobson, Assistant Professor at the University of Tennessee (and CEL Graduate Affiliate), and Jacob Lollis, Assistant Professor at the University of Cincinnati, take a step toward solving…