Richard Ben Cramer's What It Takes, a book about the 1988 race for the White House, stressed the notion of presidential contest as ordeal. It also promoted the formula that great candidate = great president.

Wrong, says Mark Halperin, senior political analyst for Time magazine.

From the NYT commentary:

Case in point: Our two most recent presidents, both of whom I covered while they were governors seeking the White House. Bill Clinton and George W. Bush are wildly talented politicians. Both claimed two presidential victories, in all four cases arguably as underdogs. Both could skillfully serve as the chief strategist for a presidential campaign.

But their success came not because they convinced the news media (and much of the public) that they would be the best president, but because they dominated the campaign narrative that portrayed them as the best candidate in a world-class political competition. In the end, both men were better presidential candidates than they were presidents. ....

So if we for too long allowed ourselves to be beguiled by “What It Takes” — certainly not the author’s fault — what do those of us who cover politics do now? After all, Mr. Cramer’s style of campaign coverage is alluring in an election season that features so many candidates with heroic biographies and successful careers in and out of politics. (Not to mention two wide-open races.)

Well, we pause, take a deep breath and resist. At least sometimes. In the face of polls and horse-race maneuvering, we can try to keep from getting sucked in by it all. We should examine a candidate’s public record and full life as opposed to his or her campaign performance. But what might appear simple to a voter can, I know, seem hard for a journalist.

If past is prologue, the winners of the major-party nominations will be those who demonstrate they have what it takes to win. But in the short time remaining voters and journalists alike should be focused on a deeper question: Do the candidates have what it takes to fill the most difficult job in the world?