PBS's top 10 nearest audiences are dominated by politicians and journalists — not other TV channels. The similarity scores here measure how closely two entities' audiences resemble each other in composition; across the top 10, they span just 0.9614 to 0.9687, a band narrow enough that no single neighbor stands out structurally.
Four of the ten neighbors are politicians: Bill Clinton (0.97), Hillary Clinton (0.97), Nancy Pelosi (0.96), and Cory Booker (0.96). Two are journalists: Rachel Maddow (0.97) and Anderson Cooper (0.97). Two are news publishers: HuffPost (0.97) and HuffPost Politics (0.96). The remaining two are PBS NewsHour (0.97), a TV show, and the Southern Poverty Law Center (0.96), a non-profit. No other TV channel appears in the top 10.
The cluster's character is civic and news-oriented, weighted toward political figures and left-leaning media outlets rather than broadcast or streaming peers. That pattern — politicians and journalists as the nearest audience neighbors for a TV channel — points to an audience defined more by its political and informational engagement than by its media consumption habits.