Modern filibuster procedures refer to the tactics used in the U.S. Senate to extend debate and delay or prevent a vote on legislation, typically requiring a supermajority to overcome. This practice has evolved over time, allowing senators to hold the floor for an extended period, making it a powerful tool for minority parties to influence legislation. The modern interpretation of the filibuster emphasizes the need for 60 votes to invoke cloture and end debate, fundamentally shaping legislative strategy and behavior in Congress.