POPVOX is a website that allows users to easily contact their representatives in Congress about bills they care about in 3 steps: 1) selecting a bill to support or oppose, 2) writing a message to their representative, and 3) sharing their voice which contributes to an aggregated view of public support or opposition. It verifies users' identities and addresses so their representatives know they are constituents. It also allows users to track bills, see how their views match representatives' votes, and share bills on social media to motivate others to take action.