The Republican Governors Association is increasing its investment in Georgia in hopes of helping re-elect Gov. Nathan Deal, new disclosures show.

The RGA filed a report late Thursday showing it was putting another $100,000 into Deal’s efforts to beat back the challenge of Democratic State Sen. Jason Carter of Atlanta. That boosts the RGA’s investment in Georgia to $1.6 million so far.

Most of the money has been spent on creating and airing TV ads and mailings. The only new expenditure listed for the past two months was $26,700 for a survey.

Similar filings by the Democratic Governors Association in Georgia showed less than $1,000 in expenditures as of June 30.