The spin so far
My general sense is that the Obama campaign is winning the spin war thus far with the "more states, more delegates" argument backed by the idea of "Obama friendly primaries and better fundraising ahead."
Thus far, the main Clinton point seems to be that they won Massachusetts despite Kennedy, Kerry, and Deval Patrick (pretty weak,) but if this holds up, they may soon be claiming more popular vote. (Yes, I know this ignores the caucuses where Obama was rampant, but popular vote is a powerful argument.)
The thing to watch for now is which spin bits are picked up by the "neutrals," your Chris Matthews/Tim Russert figures and the questions posed by interviewers.
Their presentation will shape the conventional wisdom and hence coverage and the campaign going forward.
(PS. This is a beauty. Clinton Campaign Director Mark Penn claiming Obama is the establishment candidate.
(AP) "Obama sought to claim the permanent underdog's role in the race, saying the New York senator is backed by a "political machine honed over two decades.")
Also, Looking at the next few states, the Clinton campaign is trying to buy time, (Politico) "Her team is girding for trench warfare, telling reporters that the nomination will not be decided until at least the Pennsylvania primary on April 22, if then."
And, the Mark Penn official Clinton spin memo titled "A New Day."