Thompson Makes LARGE South Carolina Ad Buy

Zogby has Thompson moving into a statistical tie for second with Huckabee.

ABC News' Christine Byun Reports: In an aggressive ad buy, GOP presidential hopeful Fred Thompson's will air a 60 second commercial tomorrow night in South Carolina on nearly every major broadcast channel from 6:25 pm to 6:30 pm.

In the ad, which is titled "Consistent Conservative," Thompson talks about having "common sense" principles. He says "basic rights come from God, not government," a classic line from his stump speech. Thompson also makes a play at his humble beginnings in Lawrenceburg, Tennessee.

This is a make or break situation for Thompson, a third place finish and he's done. If however, he manages to finish on top or even a solid second and things get very interesting.