Washington (CNN) - Another prominent Republican is lining up behind Sen. John McCain, R-Arizona, in his primary fight against former Rep. J.D. Hayworth.
Virginia Gov. Bob McDonnell said Tuesday he is "proud" to support McCain, calling him "a leader of character, courage and principle."
"Over the last year, the American people have taken a firm stand for smaller government and new pro-growth policies to create the jobs we so desperately need," McDonnell said in a statement. "These are the principles that Senator McCain fights for every day, and we need him now more than ever in the United States Senate."
The Arizona senator and former presidential candidate was a frequent presence on the campaign trail with McDonnell during his closely-watched bid for governor last year. McCain hosted fundraisers for the then-candidate and helped him shore up support among veterans in the commonwealth.
McCain has already collected endorsements from other GOP stars such as former Massachusetts Gov. Mitt Romney, Massachusetts Sen. Scott Brown and former Alaska Gov. Sarah Palin.