The document discusses how political campaigns and advocacy groups can objectively evaluate different voter outreach tactics through randomized controlled experiments in order to maximize their chances of success. It provides an example of how a campaign client tested the effectiveness of tele-town halls through a randomized experiment involving different groups of voters. The results showed tele-town halls increased voter support for the candidate but the effect varied based on the number of times voters participated, allowing the campaign to determine the most cost-effective strategy.