WaPo reports: “With little fanfare, the League of Conservation Voters has emerged as one of the most important outside groups in several key Senate races this year. The fact that LCV is spending heavily in several pivotal contests — including in Virginia, Massachusetts, Montana and Connecticut — runs counter to the conventional wisdom that environmental issues rank low on voters’ priority lists. But the group has spent nearly $8 million and influenced races such as the battle for New Mexico’s open Senate seat, where Democratic Rep. Martin Heinrich is leading former GOP Rep. Heather Wilson.”