"In November 2013, Senate Democrats used the nuclear option to eliminate filibusters on executive branch nominations and federal judicial appointments other than those to the Supreme Court.
Before November 2013, Senate rules required a three-fifths vote of the "duly chosen and sworn" members of the Senate – (usually 60 votes) to end debate on a bill, nomination or other proposal; they also require a two-thirds vote ("present and voting" – 67 or fewer votes) for a change to the Senate rules. Those rules effectively allowed a minority of the Senate to block a bill or nomination through the technique of the filibuster. This had resulted in a de facto requirement that a nomination have the support of 60 Senators to pass, rather than a majority of 51. A three-fifths vote is still required to end debates on legislation and Supreme Court nominations."
Before November 2013, Senate rules required a three-fifths vote of the "duly chosen and sworn" members of the Senate – (usually 60 votes) to end debate on a bill, nomination or other proposal; they also require a two-thirds vote ("present and voting" – 67 or fewer votes) for a change to the Senate rules. Those rules effectively allowed a minority of the Senate to block a bill or nomination through the technique of the filibuster. This had resulted in a de facto requirement that a nomination have the support of 60 Senators to pass, rather than a majority of 51. A three-fifths vote is still required to end debates on legislation and Supreme Court nominations."