As Democrats and Republicans haggled over how to share power in the Senate, Mitch McConnell, the minority leader, made one key demand: Do not touch the filibuster rule.Today, we explore the mechanics and history of the rule and look ahead at its fate. Guest: Julie Hirschfeld Davis, the congressional editor for The New York Times. For an exclusive look at how the biggest stories on our show come together, subscribe to our newsletter. You can read the latest edition here.Background reading: The debate over the minority’s ability to filibuster legislation has foreshadowed a fraught landscape ahead over what Democrats should do if Republicans obstruct President Biden’s agenda.Mr. Biden doesn’t want to eliminate the filibuster, which can be an impediment to major legislation. Left-leaning Democrats disagree, but they’re holding back for now.For more information on today’s episode, visit nytimes.com/thedaily