摘要：Partisanship and dependence on government support have characterized mexican media along its history. That is, on the one hand, the journalistic practice has been determined by the alignment towards a political stance. On the other, thanks to the intervention of the state, news outlets---especially newspapers--have survived in an economically difficult environment. Nowadays, the support from the government mainly comes in the form of official advertising, which has become a token to trade revenues for publicity. Therefore, this paper argues that media partisanship in Mexico has shifted from ideological to economic. Based upon a case study conducted in Morelia （the capital city of Michoacan）, this article analyzes the impact of the official advertising on the political information published by the local newspapers.