CNN

South Carolina GOP Chairman Katon Dawson slammed Hillary Clinton's new radio ad.

COLUMBIA, South Carolina (CNN) - Responding to a new South Carolina radio ad from Sen. Hillary Clinton that targets black voters by claiming they are "invisible" to the Bush administration, state GOP chairman Katon Dawson responded Monday night with his own take on the "invisible" theme.

“Hillary Clinton claims if elected president she will fight for South Carolinians who are currently invisible in the eyes of the federal government," Dawson said in a statement. "But if you're a hardworking parent, you're invisible to Hillary Clinton because she voted for the largest tax increase in history. If you’re a member of our armed forces, you're invisible to Hillary Clinton because she wants America to surrender to the terrorists in Iraq. If you believe all life is sacred and that marriage is between one man and one woman you're invisible to Hillary Clinton because she joins with radical groups that support federal funding for abortion and forcing us to recognize same-sex marriages.

“But it's liberals like Hillary Clinton who will be 'invisible' to South Carolina voters this election."

The statement marks the first time Dawson has attacked Clinton exclusively, signaling that Republicans here may see Clinton as their strongest potential opponent in 2008.

Dawson criticized the Democratic frontrunners in July during the CNN/YouTube Debate at The Citadel in Charleston, saying: "Hillary Clinton, John Edwards and Barack Obama are poster children for shifty political opportunism that flies directly in the face of the Citadel and everything it stands for."

A Clinton spokesman was not available for comment Monday evening.

– CNN South Carolina Producer Peter Hamby