Does American-style door-to-door canvassing work as well in Europe? This article examines existing U.S. and European research, combining studies from six countries including two new Danish experiments.

Findings: Pooled estimates reveal significantly smaller turnout effects in Europe compared to the United States.

Why it Matters? The analysis underscores that American campaign successes may not translate directly across continents or cultures.

The results highlight substantial uncertainty about European voter mobilization effectiveness and suggest further dedicated research is needed. While lower base turnout rates partially explain reduced impact, they don't fully account for the difference.