Colorado battles COVID vaccine hesitancy with get-out-the-vote tactics Colorado is using tried-and-true get-out-the-vote tactics to boost COVID-19 vaccination rates across the state. Why it matters: The novel approach is part of a broader effort by state public health officials to reach herd immunity by targeting populations that are hesitant or too busy to get vaccinated. The backdrop: To boost turnout ahead of an election, a campaign's get-out-the-vote strategy works like this: Identify the target population. Make contact. And tell them how to go vote. COVID vaccinations have followed a similar path to elections thus far: Die-hard supporters went first, but ultimate success is determined by how many others show up.