MAGA Trumps the Incumbency Advantage in a Dueling Incumbent Primary

Redistricting is the causal agent responsible for two incumbents facing off in U.S. House elections and hence, despite the rarity of these matchups, they occur periodically due to district boundary changes. In this article, we examine who wins a recent and highly competitive incumbent duel: the 2024 GOP primary in Alabama’s congressional district (CD) 1. Our assessment of this race marks the first academic study to marshal large-N survey data for the purpose of gauging voter preferences in a dueling incumbent primary. This approach gives us a clearer understanding of what accounts for the outcome of a highly contentious and extremely close election. Our findings suggest the incumbency advantage was overridden by voter alignment with the MAGA wing of the Republican Party, which produced a narrow victory for the more MAGA/Trump-positioned candidate in this race.