New York Times: A just-completed debate marathon by Maine’s candidates for governor highlighted a contentious contest with climate and energy ramifications across New England. The outcome of the race among Republican climate skeptic Paul LePage, Democrat Libby Mitchell and independent candidates, analysts say, could determine the state’s role in the nation’s only cap-and-trade system, operating in the Northeast. It also is an example of the political intensity hovering over the region heading into tomorrow, as…