In late August 2004 the Republicans were celebrating the nomination of incumbent George W. Bush for another term as president of the United States. In the midst of the festivities, Chuck Hagel, a senator from Nebraska, was telling reporters that the Republican Party had “come loose of its moorings.” This was a bold position for someone identified by the New York Times, Los Angeles Times, and Boston Globe as a prospective 2008 presidential candidate, but it was no...