I’ll let Paul Krugman speak here; he says what I’ve been feeling for quite some time. If there is a gun in the house, the Dems will find it and collectively shoot themselves.

I won’t try for fake evenhandedness here: most of the venom I see is coming from supporters of Mr. Obama, who want their hero or nobody. I’m not the first to point out that the Obama campaign seems dangerously close to becoming a cult of personality. We’ve already had that from the Bush administration — remember Operation Flight Suit? We really don’t want to go there again.

What’s particularly saddening is the way many Obama supporters seem happy with the application of “Clinton rules” — the term a number of observers use for the way pundits and some news organizations treat any action or statement by the Clintons, no matter how innocuous, as proof of evil intent.

The prime example of Clinton rules in the 1990s was the way the press covered Whitewater. A small, failed land deal became the basis of a multiyear, multimillion-dollar investigation, which never found any evidence of wrongdoing on the Clintons’ part, yet the “scandal” became a symbol of the Clinton administration’s alleged corruption.

During the current campaign, Mrs. Clinton’s entirely reasonable remark that it took L.B.J.’s political courage and skills to bring Martin Luther King Jr.’s dream to fruition was cast as some kind of outrageous denigration of Dr. King.

And the latest prominent example came when David Shuster of MSNBC, after pointing out that Chelsea Clinton was working for her mother’s campaign — as adult children of presidential aspirants often do — asked, “doesn’t it seem like Chelsea’s sort of being pimped out in some weird sort of way?” Mr. Shuster has been suspended, but as the Clinton campaign rightly points out, his remark was part of a broader pattern at the network.

I call it Clinton rules, but it’s a pattern that goes well beyond the Clintons. For example, Al Gore was subjected to Clinton rules during the 2000 campaign: anything he said, and some things he didn’t say (no, he never claimed to have invented the Internet), was held up as proof of his alleged character flaws.

For now, Clinton rules are working in Mr. Obama’s favor. But his supporters should not take comfort in that fact.

For one thing, Mrs. Clinton may yet be the nominee — and if Obama supporters care about anything beyond hero worship, they should want to see her win in November.