What is the purpose of a filibuster in the Senate?

The purpose of a filibuster in the Senate is to delay or block a vote on legislation or other matters. This procedural tactic allows one or more senators to extend debate on a proposal, effectively preventing a vote from occurring unless a supermajority of 60 senators votes to end the filibuster through a process known as cloture. The filibuster is often used by the minority party to express dissent and to influence legislation or force compromises, highlighting how important it is for the Senate to allow extended discussion and debate on significant issues.

The other options do not accurately capture the essence of a filibuster. While one might think it could expedite the legislative process, in practice, it serves the opposite function by prolonging debate and stalling decision-making. Proposing constitutional amendments and nominating Supreme Court candidates involve different procedures and do not reflect the specific function of a filibuster in legislative contexts.