Short answers, pulled from the story.
The Connecticut Compromise established that each state would receive two senators while the House of Representatives allocated seats based on population. This agreement emerged from a committee chaired by Roger Sherman during the Constitutional Convention in 1787.
Voters could directly elect their senators for the first time nationwide after the Seventeenth Amendment standardized the process in 1913. Prior to this date, Article One, Section Three of the Constitution stated that state legislatures chose their representatives.
Cloture requires support from three-fifths of the Senate, which usually means sixty votes. If the matter involves changing Senate rules including provisions regarding the filibuster itself, a two-thirds majority becomes necessary.
Cory Booker broke the record in March 2025 by speaking for twenty-five hours and five minutes starting at seven PM on March 31 and ending April 1. Strom Thurmond previously held the record with a speech lasting over twenty-four hours attempting to block passage of the Civil Rights Act of 1957.
The Origination Clause mandates that all bills for raising revenue must originate in the House of Representatives. This restriction prevents the Senate from initiating tax legislation directly while allowing it significant amendment authority.