The John Sloan Dickey Center for International Understanding

Horiuchi & Matush: Does Public Diplomacy Sway Domestic Public Opinion? Presidential Travel Abroad and Approval at Home

Jun 3, 2026

Former Dartmouth Professor Yusaku Horiuchi, Rosenwald alum Kelly Matush (now Assistant Professor at Florida State University), and co-author Ben Goldsmith have published new research in International Studies Quarterly examining whether presidential travel abroad affects public opinion at home. Their findings: the same diplomatic activity that improves a leader’s standing with foreign publics tends to erode approval domestically — a divergence with real implications for how leaders weigh the political costs and benefits of international engagement.

Read the paper here.

(Photo: Daniel Torok)