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Candidates receiving money from Palin for the period covering April 1 to June 30 include former Gov. Terry Branstad, who won last month's Republican gubernatorial primary in Iowa, and Joe Miller, who's challenging Alaska U.S. Sen. Lisa Murkowski in the August GOP primary. Each received $5,000.

Among Palin's other high-profile endorsements, Republican Carly Fiorina, who's running for the U.S. Senate from California, received $2,500.

Sharron Angle, who's challenging U.S. Senate Majority Leader Harry Reid in Nevada, also got $2,500. Nikki Haley, who's running for governor in South Carolina and for whom Palin personally campaigned, got no money, according to the filings.