(CNN) - Dr. Miriam Adelson, a major Republican donor and the wife of billionaire Las Vegas casino owner Sheldon Adelson, wrote a $5 million check Monday to the super PAC Winning Our Future, which is supporting Newt Gingrich’s campaign, a source familiar with the contribution confirmed to CNN.
This comes in addition to the previous $5 million Sheldon Adelson gave the group earlier this month. The source could not speak for attribution because of the sensitivities of the donation.
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The latest donation means the couple has given $10 million to the pro-Gingrich committee.
A spokesman for Adelson has not returned CNN’s calls seeking comment.
Winning Our Future hit Mitt Romney hard in television advertisements in South Carolina over his role as head of Bain Capital. Sheldon Adelson’s contribution helped the PAC to fund $1.3 million in television ads in the Palmetto State.
The group is hoping to raise $10 million to help run more ads in Florida, an official with knowledge of the PAC’s plans told CNN. As of Monday it had not reached its goal.
CNN reported earlier Monday Winning Our Future is planning on going up with ads in Florida soon.
Nevada journalist Jon Ralston first reported the latest donation.