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WASHINGTON, DC - NOVEMBER 20: Sen. John McCain (R-AZ) questions a witness during a hearing of the Permanent Subcommittee on Investigations of the Senate Homeland Security and Governmental Affairs Committee November 20, 2014 in Washington, DC. The committee heard testimony on the topic of 'Wall Street Bank Involvement With Physical Commodities.' (Photo by Win McNamee/Getty Images)
WASHINGTON, DC - NOVEMBER 20: Sen. John McCain (R-AZ) questions a witness during a hearing of the Permanent Subcommittee on Investigations of the Senate Homeland Security and Governmental Affairs Committee November 20, 2014 in Washington, DC. The committee heard testimony on the topic of 'Wall Street Bank Involvement With Physical Commodities.' (Photo by Win McNamee/Getty Images)

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    McCain: 'Not clear' whether GOP can keep Senate

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McCain: 'Not clear' whether GOP can keep Senate

Sen. John McCain says it's not clear whether Republicans can keep control of the Senate in 2016, and says he's sure he'll be targeted by Tea Party groups.

McCain: 'Not clear' whether GOP can keep Senate

Sen. John McCain says it's not clear whether Republicans can keep control of the Senate in 2016, and says he's sure he'll be targeted by Tea Party groups.