This has been a bit of a "will they? - won't they?" saga. That is, will the Democrats achieve a veto-proof (technically a "filibuster-proof") majority in the US Senate and thus have a sweeping hand to implement their laws?
Last time I blogged about this, there was a possibility of a Senate seat vacancy in New Hampshire that might have gone to a Democrat. That possibility was ruled out when the vacancy became a non-vacancy.
Now Senator Arlen Specter has defected to the Democrats, so, if Al Franken finally takes his seat for Minnesota (which seems likely-ish, but the legal process to, hopefully, confirm him is painfully slow), the Democrats will get their 60 seats and veto-proofery.