(CNN) – The League of Conservation Voters launched a $150,000 ad buy in Reno Thursday against Nevada Sen. Dean Heller.
The television spot criticizes the Republican senator for what the LCV says are votes supporting 'Big Oil' and against clean energy in light of what's thought will be a close Senate race between Heller and his Democrat opponent Rep. Shelley Berkley.
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The black and white ad airing in the state's second biggest city begins with a sign that reads 'Senate Washroom' and continues with a man in a suit washing off what appears to be oil into a sink turning the water black.
Meanwhile the female narrator says, "Senator Heller has been hand in hand with big oil for years."
She continues: "While raking in over 200,000 of their cash, he's voted nine times to give tax breaks to billion-dollar oil companies. While voting against clean energy-which could cost Nevada thousands of good-paying jobs."
The man dries his hands, leaving a black stain on the paper towel as he throws it into a trash bin.
"And that's a stain that'll NEVER wash out," says the narrator. "Call Senator Heller and tell him to vote to end Big Oil's special tax breaks."
The LCV calls Heller's votes "out of step with his state" pointing to the senator's vote against extending renewable energy provisions they say would create 9,000 jobs in Nevada by 2016.
"In a state that is so dependent on clean energy, Senator Heller's votes are particularly egregious," said Tiernan Sittenfeld, Senior Vice President of Government Affairs at the League of Conservation Voters, in a statement about the ad buy.
Heller's campaign responded to the attack Wednesday in a statement saying Berkley is personally invested in oil companies and voted for a national energy tax that would raise gas prices.
"This ad is a tired, over the top attack. Dean Heller actually proposed a bill that would end tax loopholes for big oil companies," said Heller campaign spokeswoman, Chandler Smith. "It's pretty clear now whose side the fourteen-year Congresswoman is on – extreme environmental groups who are killing Nevada jobs."
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