The ruckus that Scott McClellan's book has created -- or reintroduced -- will probably play out like previous ones in that it will add relatively little to the debate but will cause both sides to come out swinging at each other. Which side you choose to believe comes down to which side you already believe.

But given the above, consider what McClellan told the Today Show this morning:

"My hope is that by writing this book and sharing openly and honestly what I learned is that in some small way it might help us move beyond the partisan warfare of the past 15 years," he said.

As others have pointed out, McClellan's willingness to bring up rumors of the president's cocaine use seems to belie his claim of noble intentions. In fact, the one thing we can be sure his book won't do is move us beyond partisan bickering. That McClellan, who's spent his entire adult life in politics, seems to think otherwise is either grossly disingenuous or hopelessly naive.

Moving on to the election, there are very few fence sitters left on the hot buttons McClellan pushes in the book (the Iraq war, the integrity of Bush administration, the Plame leak, etc.) so it's hard to imagine that he will convince anyone one way or the other. But, as I said, it does reintroduce the issue, and Obama and his surrogates have wasted little time linking it all to McCain.

So will this be a big campaign issue? Probably not. It's like asking if Richard Clarke (remember him?) will be a big issue come the fall.