McCain is soft spoken and humbled. He told Tim Russert on Meet the Press this morning that his position is "pretty much" more troops or get out in the "critical" and "crucial" next few months, although he actually used the word "nuanced" to caveat Russert's formulation. Now, McCain can get away with using the word nuanced while Kerry couldn't, but I don't think there's any way we're sending more troops at all, let alone in the next few months.
I predict McCain won't run.
I further predict that if Hillary Clinton does run, she will have to decide by early next year at the latest and, given the climate, she is smart enough to know she'll have to be fully supportive of, even a leader of, the phased withdrawal option.
Clinton/Obama looks like a winning ticket to me.