Kemp had announced in January 2009 that he had been diagnosed with cancer. He said he was undergoing tests but gave no other detail.
Kemp, a former quarterback for the Buffalo Bills, represented western New York for nine terms in Congress, leaving the House for an unsuccessful presidential bid in 1988.
Eight years later, after serving a term as President George H.W. Bush's housing secretary, he made it onto the national ticket as Bob Dole's running-mate.
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