Catherine Cortez Masto hangs on to Harry Reid’s old seat.
Democrat Catherine Cortez Masto has defeated Republican Rep. Joe Heck in Nevada's Senate race, a key contest that was targeted by environmental groups. Three of them—the Sierra Club, the League of Conservation Voters, and EDF Action—spent more than $1 million running ads against Heck, who is an opponent of President Barack Obama's Clean Power Plan. The seat is currently held by Senate Democratic Leader Harry Reid.
In 2012, while running for reelection to the House of Representatives, Heck told Public Radio International, "Well, I think certainly over the millennia, we've seen changes in our climate both ways, and I think throughout the future millennia we will continue to see climate change that goes both ways." According to Heck, "When you start looking at trying to regulate something like carbon dioxide, which is a natural, biological process, you start running into areas of confusion." In 2010, he signed a pledge sponsored by the conservative group Americans for Prosperity to oppose any legislation that would raise taxes to fight climate change. And in 2011, he followed through on the commitment by voting to block the EPA from regulating greenhouse gas emissions. The environmental groups blasted Heck over his record on solar energy—a major issue in Nevada.