You might dismiss The New York Times' Paul Krugman's complaint that "the Obama campaign seems dangerously close to becoming a cult of personality" as hyperbole. Until you hear Chris Matthews, who no longer has the excuse of youth, react to Obama's Potomac primary victory speech with "My, I felt this thrill going up my leg." When his MSNBC co-hosts tried to bail him out, he refused to recant. Not surprising for an acolyte who said that Obama "comes along, and he seems to have the answers. This is the New Testament."

I've seen only one similar national swoon. As a teenager growing up in Canada, I witnessed a charismatic law professor go from obscurity to justice minister to prime minister, carried on a wave of what was called Trudeaumania.

But even there the object of his countrymen's unrestrained affections was no blank slate. Pierre Trudeau was already a serious intellectual who had written and thought and lectured long about the nature and future of his country.

Obama has an astonishingly empty paper trail. He's going around issuing promissory notes on the future that he can't possibly redeem.

Promises to heal the world with negotiations with the likes of Iran's President Ahmadinejad. Promises to transcend the conundrums of entitlement reform that require real and painful trade-offs and that have eluded solution for a generation. Promises to fund his other promises by a rapid withdrawal from an unpopular war -- with the hope, I suppose, that the (presumed) resulting increase in American prestige would compensate for the chaos to follow.

Democrats are worried that the Obama spell will break between the time of his nomination and the time of the election, and deny them the White House. My guess is that he can maintain the spell just past Inauguration Day. After which will come the awakening. It will be rude.