The League of Conservation Voters named U.S. Sen. Elizabeth Dole to its "Dirty Dozen."

The advocacy group tracks members of Congress on its scorecard of votes on environmental issues, but it periodically issues a list of what it considers the 12 worst.

"Senator Dole's record proves that she's working in the best interests of Exxon-Mobil, not the people of Raleigh-Durham," said political director Tony Massaro in a statement.

The group has given Dole a lifetime rating of four percent on its environmental scorecard for votes against incentives for renewable energy and for tax breaks for oil companies.  

In 2006, the League of Conservation Voters named then U.S. Rep. Charles Taylor to the "Dirty Dozen" and spent money advertising against him. Taylor lost the election.

Massaro would not say if the league will spend money on Dole's race.  

U.S. Reps. Mel Watt and David Price got top grades on the environment.

The League of Conservation Voters gave both North Carolina Congressmen 95 percent ratings for their environmental voting records, according to this scorecard.

Rep. Brad Miller got a 90 percent, while Rep. Bob Etheridge got 85 percent.

The lowest rankings went to Rep. Patrick McHenry, who got a zero; Rep. Howard Coble, who got 5 percent, and Rep. Virginia Foxx, who got 10 percent.

Sens. Richard Burr and Elizabeth Dole both received a 7 percent rating. 

Hat Tip: Facing South