Follow the Pollsters: Inaccuracies in Media Coverage of the Horse-race during the 2008 Canadian Election

We identify frequent inaccuracies in journalistic interpretations of the horse race ("who is ahead?") and of change over time ("who is gaining?") in poll reports during the Canadian election of 2008. We test two explanations. The "mistaken mindset" hypothesis holds that journalists exaggerate the horse race because they systematically miscalculate the margin of error. The "follow-the- pollster" hypothesis holds that journalists follow the horse-race interpretations that they find in pollsters' reports. We find strong support for the "follow-the-pollster" hypothesis in the data and in interviews with pollsters and journalists and conclude that pollsters' reports should be a key element to consider in any attempt to improve the level of accuracy in media reports of the horse race.