Nominations to the Supreme Court During Presidential Election Years (1900-Present) [March 16, 2016] [open pdf - 175KB]
"This CRS Insight provides data and analysis related to nominations made to the Supreme Court during presidential election years from 1900 to the present. As of this writing, there have been eight such nominations since 1900-six to fill actual vacancies that existed at the time a President submitted a nomination to the Senate and two for anticipated future vacancies on the Court (i.e., vacancies that did not exist at the time a President submitted a nomination to the Senate). An anticipated vacancy, for example, arises when a sitting Justice announces his or her intention to retire upon Senate approval of a new Justice."
CRS Insight, IN10455
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html