Sen. Lindsey Graham raised $2.2 million for his presidential campaign in the second quarter fundraising period, and transferred another $1.5 million over from his Senate account.

That gave the South Carolina Republican a total intake of $3.71 million for his underdog White House bid as of June 30, with cash available to spend of $2.6 million. Graham's campaign will report no debt in its Federal Election Commission filing, his spokesman said late Wednesday.

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Graham, a foreign policy hawk, is waging a longshot bid for president, and brings foreign policy expertise and a plainspoken personality to a deep field of candidates that numbers more than 15. According to the RealClearPolitics.com average, Graham is running 15th nationally among GOP primary voters, with 0.6 percent support.