"We're not worried about losing Georgia. But at the same time, he has to do well in Georgia," Tyler said. "Georgia is a lot like South Carolina, and Newt hasn't had a win since South Carolina."
Winning Our Future has been relying on money from Sheldon Adelson, a Las Vegas casino magnate who has contributed millions to the group since January and made an additional large donation this past week.
The Gingrich campaign has aired a half-hour infomercial on cable TV in the four major states Tuesday, where he outlined his plan to bring gas prices down and make the U.S. more energy independent. But the campaign hasn't purchased any broadcast time in Super Tuesday states.
Romney's campaign has bought cable advertising time in Idaho and Vermont, which also hold contests that day. Texas Rep. Ron Paul has also bought cable time in Vermont.
Gillum reported from Washington. Associated Press writer Philip Elliott contributed to this story from Washington.
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