Jack Kemp, the former pro quarterback who turned fame on the gridiron into a career in national politics and a crusade for lower taxes, has died of cancer at age 73.

Family spokeswoman Marci Robinson said Kemp died shortly after 6 p.m. Saturday, surrounded by his family and pastor. Kemp died at his home in Bethesda, Md., in the Washington suburbs, friends said.

Kemp’s office announced in January that he had been diagnosed with an unspecified type of cancer. By then, however, the cancer was in an advanced stage and had spread to several organs, former campaign adviser Edwin J. Feulner said. He did not know the origin of the cancer.

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.

With that loss, the Republican bowed out of political office, but not out of politics. In speaking engagements and a syndicated column, he continued to advocate for the tax reform and supply-side policies — the idea that the more taxes are cut the more the economy will grow — that he pioneered.

The last time Flap saw Jack Kemp in person was at Flap, Jr.’s high school graduation at Oaks Christian School, in Westlake Village, California where he spoke at his graduation. A great speech from a great person.

May he rest in peace.