Washington (CNN) - An energy advocacy group is launching another television ad in South Carolina taking aim at Sen. Lindsey Graham for his support of energy legislation that would include a cap-and-trade program.
The 30-second spot is the latest salvo in an ongoing campaign against the Republican by the American Energy Alliance, a group funded in part by oil and gas companies that has spent roughly $375,000 over the last month knocking Graham on South Carolina's radio and TV airwaves.
The newest ad comes one week after Graham was censured by the Charleston County Republican Party for supporting the legislation, the latest indicator of the senator's difficult relationship with grassroots conservatives in his home state.
"Energy is the lifeblood of our economy, from home to work to play," a narrator says in the ad, as viewers are shown images of basic everyday tasks that require electricity, oil and gas. "Energy fuels us.
"So why would Senator Lindsey Graham support a new national energy tax called cap and trade, which could sign increase electricity bills, gas prices, and cost American jobs? Call Senator Lindsey Graham. Tell him you're turned off by his support for cap and trade."
Patrick Creighton, a spokesman for the American Energy Alliance, said the group is spending $75,000 to air the ad across the state.
"We're not going to let up," Creighton said. "As long as we have the resources we're going to continue campaigning in South Carolina. We just think the senator is offering a way forward that's just smoke and mirrors."
A spokesman for Graham did not respond to a request for comment on the ad. Graham has said he would only support cap-and-trade legislation as part of a bipartisan compromise that would include provisions to expand nuclear energy and offshore oil and gas drilling.