Thanks, snood!
Yeah, in the big article in the New York Times (the one that I hoped for about 30 seconds was inspired by what I said to him when I met him :-)) he talked about purposely holding back up until that point, avoiding the whole "angry black man" trap. I don't remember the exact quote, can find it.
Thomas, I'm still confused about the social security thing, will look into it further. I generally trust Krugman on economic issues, but not implicitly. I put a lot of stock into what he was saying about the housing market in the spring and summer of 2004 (when we were looking for and purchasing a house) and while a lot of the general stuff he said was true, a lot of it wasn't. (I paid a fairly hefty chunk of change to get a lock on a rate because he promised the rates would go way up in the time interval we were talking about, and they didn't -- in fact, my locked rate ended up being HIGHER than if I'd just waited and not locked anything. That kind of thing.)
My extremely inexpert opinion at this point is that a) people are concerned about whether there will be any money for them when they retire, and b) it's a way to differentiate himself from Hillary. They (all three) really are very similar on many issues and points of differentiation are important.
I think Obama's been trying hard to get through the idea that hey, is Hillary really as experienced as she says she is? I've seen him say it (in full texts of speeches or in long articles for example) fairly often, but it doesn't seem to be breaking through as a trope/ soundbite. This might be another take on it, I don't know.
OK, followed your second link:
Quote: "I'm not in this race to fulfill some long-held plan or because it was owed to me," Obama told a gathering of Nevada Democrats after Thursday night's Las Vegas debate.
That was a veiled reference to an account by biographers Jeff Gerth and Don Van Natta that the Clintons sealed a "secret pact of ambition" to both win the presidency - which has been vehemently denied by Clinton advisers.
Asked if Obama was referring to the pact, a spokeswoman replied, "Barack Obama has not been mapping out his run for president from Washington for the last 20 years like some of his opponents."
Hmm, don't like it much.