Summary and Keywords
Field experiments allow researchers on political behavior to test causal relationships between mobilization and a range of outcomes, in particular, voter turnout. These studies have rapidly increased in number since 2000, many assessing the impact of nonpartisan Get-Out-the-Vote (GOTV) campaigns. A more recent wave of experiments assesses ways of persuading voters to change their choice of party or alter their social and political attitudes. Many studies reveal positive impacts for these interventions, especially for GOTV. However, there are far fewer trials carried out outside the United States, which means it is hard to confirm external validity beyond the U.S. context, even though many comparative experiments reproduce U.S. findings. Current studies, both in the United States and elsewhere, are growing in methodological sophistication and are leveraging new ways of measuring political behavior and attitudes.
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