Republicans: William Tecumseh Scranton

"This is irrevocable," said Pennsylvania's G.O.P. Governor William Scranton. "I am not going to run ever again for any public office under any circumstances — there are no equivocations of that statement." And so, after one term in Congress and almost four years in the Pennsylvania Statehouse, ended the political career of Bill Scranton, 48, one of the U.S.'s ablest executives and one of the Republican Party's brightest lights.

The announcement came as a shock to reporters. "Does that include being drafted?" asked a newsman. "Including being drafted," said Scranton. And to...