nomination.
Here, I will do it for you since I am sure you would claim amnesia.
And in 1968, President Lyndon B. Johnson nominated Abe Fortas, who was already sitting as an Associate Justice, to succeed Chief Justice Earl Warren, but the Fortas nomination was the target of a bipartisan filibuster – principally in reaction to the Warren Court’s liberalism and ethical questions about Fortas, although objections were certainly also made that it was inappropriate to fill the seat in an election year. That filibuster prompted Homer Thornberry, whom Johnson nominated to succeed Fortas as an Associate Justice, to withdraw his name from consideration in October 1968, because there was no vacancy to fill. Moreover, the failure to confirm Fortas as the Chief Justice did not leave the Court short a Justice, because Chief Justice Earl Warren remained on the bench
http://www.scotusblog.com/2016/02/supreme-court-vacancies-in-presidential-election-years/