The Reputational Consequences of Polarization for American Foreign Policy: Evidence from the US-UK Bilateral Relationship
How does partisan polarization in the United States affect foreign perceptions of its security commitments and global leadership? In a survey experiment fielded to 2000 adults in the United Kingdom, I demonstrate that priming respondents to think about US polarization negatively impacts their evaluations of the US-UK bilateral relationship. These impacts are stronger for the long-term, reputational consequences of polarization than for immediate security concerns. While foreign allies do not expect the United States to renege on existing security commitments, perceptions of extreme polarization make them less willing to engage in future partnerships with the United States and more skeptical of its global leadership. I find that these negative reputational consequences of polarization are driven by perceptions of preference-based, ideological polarization rather than identity-based, affective polarization. The results suggest that American allies anticipate that increasing divergence between the Republican and Democratic Party will create future uncertainty around US foreign policy.
