Speed of Presidential and Senate Actions on Supreme Court Nominations, 1900-2010 [August 6, 2010] [open pdf - 472KB]
"The speed with which appointments to the Supreme Court move through various stages in the nomination-and-confirmation process is often of great interest not only to all parties directly involved, but, as well, to the nation as a whole. This report provides information on the amount of time taken to act on all Supreme Court nominations occurring between 1900 and the present. It focuses on the actual amounts of time that Presidents and the Senate have taken to act (as opposed to the elapsed time between official points in the process). For example, rather than starting the nomination clock with the official notification of the President of a forthcoming vacancy, this report focuses on when the President first learned of a Justice's intention to leave the Court (e.g., via a private conversation with the outgoing Justice), or received word that a sitting Justice had died. Likewise, rather than starting the confirmation clock with the transmission of the official nomination to the Senate, this report focuses on when the Senate became aware of the President's selection (e.g., via a public announcement by the President)."
CRS Report for Congress, RL33118