Do politics play a role in TV viewing? 
Yes and no, according to Nielsen IAG, which recently released data showing which cable programs are most “engaging” among self-identified Democrats and Republicans.
“Engagement” refers to the amount of attention paid to a television program by the average viewer.  Nielsen measures TV engagement by questioning a representative panel of viewers about their recall of specific telecasts’ content.
Nielsen’s analysis found that the cable programs that received the highest overall engagement scores — meaning viewers were most engaged in the shows’ content — also received the most bipartisan support, …