When Al Franken is finally seated -- and he will be, the Democrats will have 60 members of their caucus (including Lieberman and Sanders). That is, or should be, a filibuster-proof caucus.
Not every time, of course. Specter claims he will stick to his newfound opposition to the Employee Free Choice Act:
My change in party affiliation does not mean that I will be a party-line voter any more for the Democrats that I have been for the Republicans. Unlike Senator Jeffords’ switch which changed party control, I will not be an automatic 60th vote for cloture. For example, my position on Employees Free Choice (Card Check) will not change.Specter was for the Employee Free Choice Act before he was against it. So, it's not perfect, but still...
Today offers a prime example of GOP extremism. The Republicans have been filibustering the confirmation of Kathleen Sebelius, despite the swine flu emergency. The Sebelius filibuster shows just how crazy the GOP Senate caucus has become.