Republican strategist Nathan Sproul is a managing partner of a national political consulting firm, Lincoln Strategy Group, in Arizona. His group has been hired by the McCain campaign to "register voters." The firm was once known as Sproul & Associates. Sproul's organization has been criminally investigated on several occasions for destroying voter registration forms filled out by Democrats.CBS News: Voter Fraud Charges Out West (October 14, 2004) The Huffington Post: McCain Employing GOP Operative Accused of Voter...Fraud (October 20, 2008)