This article analyzes a paradoxical effect of the 2012 presidential campaign: the rise of public support for nuclear energy production less than a year after the Fukushima-Daishi disaster. Based on analyses of survey data, media coverage and party manifestos, this article shows at the macro and micro-level that this rise of public support is led by a strong mediatization of the nuclear issue, its unprece- dented party politicization, and its reframing by the mainstream conservative party and the pro- nuclear interest groups – in terms of economic efficiency rather than risks. These results allow us to draw several conclusions regarding cam- paign effects, connexions between individual positions and party identification, as well as media impact on political competition.