DENVER - Political marriages are never pretty.
Quote Biden on Obama:"The presidency is not something that lends itself to on-the-job training."
"I think he can be ready but right now, I don't believe he is," Biden said of Obama.
Given the inbred cesspool that is Washington politics, it's always easy to dig up damning statements that today's bedfellows made about one another in the last election.
It's simply part of this sordid game where loyalty doesn't last one inch beyond a politician's most cynical personal interests and insatiable self-gratification.
Just ask Elizabeth Edwards.
Barack Obama's choice of Joe Biden as his running mate is certainly no exception.
It didn't take John McCain's campaign more than a few minutes to dredge up Biden's unvarnished view of Obama. At least, that was Biden's view before he won the vice-presidential lottery.
Politicians hate being reminded of past statements like this. They want to explain: "I didn't really mean that. It's just what I had to say in a campaign and you should never believe anything I say during a campaign."
But that would not be in their best political interest, so they never say that.
What's particularly devastating about Biden's analysis from the past - already neatly produced into a compelling McCain ad - is that it's precisely the Republican line of attack on Obama.
And there isn't much Biden can say now to undo the damage of his legendarily loose lips.
"With me on board, he'll be fine," Biden could say just before being removed from the ticket by Obama.
Nor can Biden argue that somehow Obama has gained some crucial world experience in the past 12 months. All Obama has learned since then is how to be a better presidential candidate. And, of course, brushed up his grasp of world affairs with advisers and briefing papers.
Not terribly reassuring in a world where terrorists seethe, China rises and our old nuclear nemesis Russia is back on the march.