Fundraising has been a strength of the RNC during the tenure of Chairman Reince Priebus, though the committee struggled in other areas, especially with its turnout operation, in 2012. Committee officials are seeking to address that with the new Growth and Opportunity Project, which is designed to expand outreach to minority communities and improve the RNC's ground game.

"As we work to build and grow the party, we remain committed to spending our money wisely and are grateful to our donors and supporters," Priebus said in a statement. "Together, we're working to take the Republican message of economic opportunity to every voter in every neighborhood. And with the help of the Growth and Opportunity Project, we're laying the foundation for future Republican victories."