How does a filibuster work?

Old Blog Import

The Senate’s odd tradition of the filibuster—delaying a vote indefinitely by speaking for hour after hour on the Senate floor—could push back a decision on Estrada for weeks. It might even force Republicans to withdraw the conservative Hispanic lawyer from consideration. Why is the Senate allowed to use this anti-democratic stunt, and how does it work?

This is a very interesting and informative article from slate.