The reporting on news in the media can be highly influential on election outcomes and therefore democracy. Bias in coverage of news arises from mainly 2 sources: (1) topics covered as opposed to the ones neglected, (2) the framing of the news which fit into a broader political narrative. A robust scientific analysis of the topic is difficult as the amount of data (articles, headlines, appearances) can be rather large. The paper by Haider et al. (2026) accomplished a major step forward through the systematic treatment of “selection bias” in news coverage. Related to news coverage, selection bias has both a statistical as well as a substantive meaning. The substantive finding of selection bias refers to the fact that the print media studied tend to prefer “horse race stories to policy issues” in upcoming elections, i. e. the focus on opposing candidates rather than the underlying policy choices. The negativity bias in reporting remains another constant in media research.
