Shortly after Alaska Gov. Bill Walker (I) convened a climate change team last year, the oil and gas industry got busy.

The re-election prospects of Alaska Gov. Bill Walker could turn on whether he backs a controversial carbon tax to address mounting concerns in the state over global warming.

In a well-funded effort to make Republican incumbents in swing districts and states more palatable to environmental voters, conservative clean energy group ClearPath Action Fund today unveiled two of its final endorsements this election cycle: California Rep. Steve Knight and Arizona Rep. Martha McSally in her Senate bid.

House Republicans in competitive districts are continuing to highlight their green credentials ahead of November's elections.

ClearPath Action Fund, an organization that backs Republicans who support clean energy, announced two new endorsements yesterday: Republican Reps. Tom Reed of New York and Erik Paulsen of Minnesota.