In the Internet era, people can encounter a vast array of political news outlets, many with which they are unfamiliar. These unknown media outlets are notable because they represent potential sources of misinformation and coverage with a distinctive slant. We use two large survey experiments to consider how source familiarity influences political communication. Although this demonstrates the public is averse to consuming news from unfamiliar media, we show that—conditional on exposure to them—unknown local and foreign media sources can influence public opinion to an extent similar to established mainstream news outlets on the same issues. This comparable effectiveness stems from the public’s charitable evaluations of the credibility of unfamiliar news sources and their relatively low trust in familiar mainstream media. We find avoidance of unknown news outlets, not resistance to their coverage, is the primary factor limiting their political influence.

Empathic ability is the ability to interpret the emotional state of others. In today's highly partisan and polarized environment, empathic ability may play a key role in determining how partisans respond emotionally to changes in public policy and those helped or harmed by the policy. Utilizing Baron‐Cohen et al.'s (Journal of Child Psychology and Psychiatry, 42, 241–251, 2001) “Reading the Mind in the Eyes” test to measure empathic ability, we conduct a survey experiment where we asked participants to read about a partisan individual who may lose their health insurance if the Affordable Care Act were to be repealed. We show that empathic ability shapes attitudes about people and policies, but that the effects are contingent upon the respondent's partisanship, the target's partisanship, and an interaction of the two. Empathic ability produces more positive affect and policy support among Democrats but reduces positive affect among Republicans. The divergent effects of empathic ability on Democrats and Republicans are further exacerbated when the target is an out‐partisan.

In the Internet era people can encounter a vast array of political news outlets, many of which they are unfamiliar with. These unknown media outlets are notable because they represent potential sources of misinformation and coverage with a distinctive slant. We use a large survey experiment to consider how source familiarity influences political communication. While this demonstrates the public is averse to consuming news from unfamiliar media, we show that—conditional on exposure to them—unknown local and foreign media sources can influence public opinion to an extent similar to established mainstream news outlets on the same issues. This comparable effectiveness stems from the public’s charitable evaluations of the credibility of unfamiliar news sources and their relatively low trust in familiar mainstream media. We find avoidance of unknown news outlets, not resistance to their coverage, is the key factor limiting their political influence.