Environmental threat
Energy security
Energy prices
Employment
They are arguing 3 of the 4 pillars. The right has been extremely effective at negating the environmental pillar by packaging it in with their ideological template, and there is no sense trying to alter that as part of the election strategy. If anything, focusing on the environmental issues would motivate opposition by activating the defense response built into the conservative world view.
You might find this paper interesting:
http://www.mitpressjournals.org/doi/abs/10.1162/glep.2006.6.1.76Jacques, Peter.
The Rearguard of Modernity: Environmental Skepticism as a Struggle of Citizenship
Global Environmental Politics - Volume 6, Number 1, February 2006, pp. 76-101
The MIT Press
Peter Jacques - The Rearguard of Modernity: Environmental Skepticism as a Struggle of Citizenship- Global Environmental Politics 6:1 Global Environmental Politics 6.1 (2006) 76-101 The Rearguard of Modernity: Environmental Skepticism as a Struggle of Citizenship
Peter Jacques* Environmental skepticism doubts the importance and reality of environmental problems, but it is not about science. It is about politics -- global politics to be specific.
Environmental skepticism denies the reality and importance of mainstream global environmental problems. However, its most important challenges are in its civic claims which receive much less attention. These civic claims defend the basis of ethical authority of the dominant social paradigm. The article explains how political values determine what skeptics count as a problem. One such value described is “deep anthropocentrism,” or the attempt to split human society from non-human nature and reject ecology as a legitimate field of ethical concern. This bias frames what skeptics consider legitimate knowledge. The paper then argues that the contemporary conservative countermovement has marshaled environmental skepticism to function as a rearguard for a maladaptive set of core values that resist public efforts to address global environmental sustainability. As such, the paper normatively argues that environmental skepticism is a significant threat to efforts to achieve sustainability faced by human societies in a globalizing world.