Scott Walker

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Wisconsin State Patrol officers are stationed outside the office of Gov. Scott Walker on Wednesday, Feb. 16, 2011, in Madison, Wis., as thousands of demonstrators swarm the state Capitol, including a protester holding a sign, for a second day of protests. (AP Photo/Wisconsin State Journal, John Hart)

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Protesters against Wisconsin Gov. Scott Walker's bill to eliminate collective bargaining rights for many state workers pack the Rotunda of the state Capitol in Madison, Wis., on Thursday, Feb. 17, 2011. (AP Photo/Andy Manis)

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Opponents of Wisconsin Gov. Scott Walker's budget repair bill march around the state Capitol in Madison, Wis., on Wednesday, Feb. 16, 2011, the second day of widespread demonstrations. (AP Photo/Wisconsin State Journal, John Hart)

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Residents turn out for a rally at the Brown County Courthouse in downtown Green Bay, Wis., on Wednesday, Feb. 16, 2011, to protest Wisconsin Gov. Scott Walker's budget repair bill, (AP Photo/Green Bay Press-Gazette, H. Marc Larson)

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Ginny Fleck attends a rally at the Brown County Courthouse in downtown Green Bay, Wis., on Wednesday, Feb. 16, 2011, to protest Wisconsin Gov. Scott Walker's budget repair bill. (AP Photo/Green Bay Press-Gazette, H. Marc Larson)

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Protesters opposed to Wisconsin Gov. Scott Walker's proposal to eliminate collective bargaining rights for many state workers crowd the Rotunda of the state Capitol in Madison, Wis., on Wednesday, Feb. 16, 2011. (AP Photo/Andy Manis)

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Wisconsin Gov. Scott Walker talks on Wednesday, Jan. 19, 2011, about his legislative agenda in his office at the state Capitol in Madison, Wis. (Associated Press)