For tonight's the-sky-is-falling/the-sky-is-not-falling comments, here's a good discussion of the arcane rules that govern when the winner of a special election is seated in the Senate. I'd just like to mention that, Kennedys aside, four of the last five Massachusetts governors have been Republicans. For all the significance of a Coakley loss tonight, a losing statewide Democratic candidate in Massachusetts is not unprecedented. And, hey, I like the idea of a pro-choice Republican. Maybe he'll oppose the Stupak amendment.