Voters may be unable to hold politicians to account if they lack basic information about their representatives’ performance. Civil society groups and international donors therefore advocate using voter information campaigns to improve democratic accountability. Yet, are these campaigns effective? Limited replication, measurement heterogeneity, and publication biases may undermine the reliability of published research. We implemented a new approach to cumulative learning, coordinating the design of seven randomized controlled trials to be fielded in six countries by independent research teams. Uncommon for multisite trials in the social sciences, we jointly preregistered a meta-analysis of results in advance of seeing the data. We find no evidence overall that typical, nonpartisan voter information campaigns shape voter behavior, although exploratory and subgroup analyses suggest conditions under which informational campaigns could be more effective. Such null estimated effects are too seldom published, yet they can be critical for scientific progress and cumulative, policy-relevant learning.

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SignificanceText messages providing salient, nonpartisan, official information on budget corruption prompted Ugandan voters to take the performance of some politicians into account when voting. Holding politicians accountable via elections is a fundamental precursor to effective governance, economic development, and high-quality public services. The results indicate that communication technologies can combine with data on budget management to help voters make better informed choices at the polls and thus have the potential to enhance local electoral accountability by providing information that is difficult for politicians to control and manipulate.