Twenty-nine times in American history there has been an open Supreme Court vacancy in a presidential election year, or in a lame-duck session before the next presidential inauguration.This counts vacancies created by new seats on the Court, but not vacancies for which there was a nomination already pending when the year began, such as happened in 1835–36 and 1987–88.) The president made a nomination in all twenty-nine cases.


https://www.nationalreview.com/2020/...cancy-in-2020/