Since the inauguration of Mexican democracy in 2000, organised criminal violence had been leaking into the political arena. Yet, it escalated in the 2018 elections, when dozens of local candidates were killed. In most of these cases, the concrete perpetrators and motives remained in the dark. How did Mexican society make sense of this opaque, unprecedented wave of electoral violence? On the basis of a qualitative content analysis of over 1,200 news reports, I examine the structuring power of a shared narrative: the frame of organised crime. By conceiving candidate killings as economic violence within the criminal community, this commonsensical frame of interpretation permitted Mexican society to ‘normalise’ these killings as ‘business as usual’ by criminal organisations.