Reagan faced greater difficulties in filling the final Supreme Court vacancy, which arose due to the retirement of Lewis F. Powell Jr. Reagan nominated Robert Bork in July 1987, but the nomination was rejected by the Senate in October 1987. Later that month, Reagan announced the nomination of Douglas H. Ginsburg, but Ginsburg withdrew from consideration in November 1987. Finally, Reagan nominated Anthony Kennedy, who won Senate confirmation in February 1988. Along with O'Connor, Kennedy served as the key swing vote on the Supreme Court in the decades after Reagan left office.