This is the condition of her support after he won the nomination.
Yes, like the quid pro quo clearly, transparently, certainly sitting behind present treatment by Obama of Lieberman.
Let's try another thesis. We can judge the relative correctness of it via its predicitive usability (over the next two or so weeks). I expect Obama to appoint a significant number of accomplished Republicans to his administration. I expect that because, as with Lieberman and the consideration of Clinton for this post, I assume Obama actually wishes to achieve as much co-ordinated and bi-partisan shoulder to the wheel effort as can reasonably be attained. I assume that he appreciates the seriousness of multiple dilemmas now facing the US and has the intention of establishing a broad cooperative framework of governance in which to go forward. And let's note that pulling people with different ideas on policy into an administration was something which Lincoln also did - for all the right reasons.