This chapter describes the first known research on how socially-shared news affects political interest, policy preferences, and self reported voter turnout. It relies on a feed-ranking AB test on Facebook during the 2012 election to instrument exposure to content, and a large survey launched after election day. The chapter first examines the correlation between exposure to socially-shared public affairs content, or ``hard news,’’ and civic engagement, in the setting of social media. It then analyzes the effect of the feed-ranking AB test, finding the following small but notable effects—additional exposure to socially shared political content caused small increases in self reported turnout, and caused respondents to report slightly more liberal policy preferences, particularly among independents.