Broadband Internet and Political Behavior: Evidence from the United States

Abstract

This paper examines the effect of the introduction of broadband Internet on voting and campaign donations in the 2000s. To identify the effect of broadband, I use an instrumental variable strategy based on geographic terrain attributes which affected the cost of building cable infrastructure. I find that broadband has led to a large increase in voter turnout in presidential elections, as well as an increase in the total amount donated to political campaigns. Consistent with the hypothesis that Democrats have a stronger online presence, I also find a large effect on Democratic vote share in presidential elections. Evidence suggests the existence of both direct and indirect channels for the broadband effect. In particular, I find that broadband availability is associated with greater political knowledge, an increase in online (but not offline) donations, and the promotion of liberal values.