Appendix_A – Supplemental material for Group Commitment Among U.S. Party Factions: A Perspective From Democratic and Republican National Convention Delegates CongerKimberly H. CoopermanRosalyn ShufeldtGregory LaymanGeoffrey C. KalkanKerem Ozan GreenJohn C. HerreraRichard 2019 <p>Supplemental material, Appendix_A for Group Commitment Among U.S. Party Factions: A Perspective From Democratic and Republican National Convention Delegates by Kimberly H. Conger, Rosalyn Cooperman, Gregory Shufeldt, Geoffrey C. Layman, Kerem Ozan Kalkan, John C. Green and Richard Herrera in American Politics Research</p>