FRANKFORT, KY - MAY 19: U.S. Senate candidate and Kentucky Secretary of State Alison Lundergan Grimes (D-KY) campaigns in advance of the state's Democratic primary May 19, 2014 at Lakeview Park in Frankfort, Kentuck...

FRANKFORT, KY - MAY 19: U.S. Senate candidate and Kentucky Secretary of State Alison Lundergan Grimes (D-KY) campaigns in advance of the state's Democratic primary May 19, 2014 at Lakeview Park in Frankfort, Kentucky. A recent "Bluegrass Poll" by the Louisville Courier-Journal showed Grimes in a virtual tie with the incumbent, Senate Republican Leader Mitch McConnell (R-KY). (Photo by Win McNamee/Getty Images)

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