1. Introduction; 2. Theorizing localism and radical right support; 3. Localism and radical right support in Europe; 4. Who are the localists that support the radical right?; 5. Neighborly ties, local autonomy, and SVP support in Switzerland; 6. Local autonomy shifts, local cohesion, and Le Pen support in France; 7. Local political salience and radical right party success in OECD countries; 8. Conclusion.