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UNITED STATES - August 17: Fairgoers raise their hand when asked if they support increasing spending towards  alzheimer's research as Republican presidential candidate Sen. Lindsey Graham, R-S.C., speaks at to fairgoers at The Des Moines Register Presidential Soap Box at the Iowa State Fair in Des Moines, Iowa, Monday, August 17, 2015. (Photo By Al Drago/CQ Roll Call)

UNITED STATES - August 17: Fairgoers raise their hand when asked if they support increasing spending towards alzheimer's research as Republican presidential candidate Sen. Lindsey Graham, R-S.C., speaks at to fairgoers at The Des Moines Register Presidential Soap Box at the Iowa State Fair in Des Moines, Iowa, Monday, August 17, 2015. (Photo By Al Drago/CQ Roll Call)

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