The financial turmoil has pushed the Obama campaign into the lead, and this is mostly justified. Barack Obama is more thoughtful on the economy than his opponent, and his bench of advisers is superior. But there’s a troubling side to the Democratic advance. The claim that the financial crisis reflects Bush-McCain deregulation is not only nonsense. It is the sort of nonsense that could matter.

So says Sebastian Mallaby in the Washington Post.

If Obama’s “bench of advisors” is so superior, and Barack is so darned thoughtful, why is Obama peddling said nonsense? That’s what has given him the bump in the polls — blaming Republicans for deregulating.

A few grafs later:

If that doesn’t convince you that deregulation is the wrong scapegoat, consider this: The appetite for toxic mortgages was fueled by Fannie Mae and Freddie Mac, the super-regulated housing finance companies. Calomiris calculates that Fannie and Freddie bought more than a third of the $3 trillion in junk mortgages created during the bubble and that they did so because heavy government oversight obliged them to push money toward marginal home purchasers. There’s a vigorous argument about whether Calomiris’s number is too high. But everyone concedes that Fannie and Freddie poured fuel on the fire to the tune of hundreds of billions of dollars.

Of course, two of Obama’s advisors got rich running Fannie Mae into the ground. What a bench!

So blaming deregulation for the financial mess is misguided. But it is dangerous, too, because one of the big challenges for the next president will be to defend markets against the inevitable backlash that follows this crisis.

Then Obama, with his rank opportunism on this issue, has disqualified himself.