We review the theoretical literature on market determinants of media bias. We present a theoretical framework that …

This paper reviews the empirical evidence on commercial media bias (i.e., advertisers influence over media accuracy …; iii) A sufficiently high degree of competition in the market for news drives out commercial media bias …

There are two different types of media bias. One bias, which we refer to as ideology, reflects a news outlet's desire … to affect reader opinions in a particular direction. The second bias, which we refer to as spin, reflects the outlet …. Whereas competition can eliminate the effect of ideological bias, it actually exaggerates the incentive to spin stories …