Story highlights The Trump campaign released a list of judicial nominations bringing their count to 21 names from the previous 10

Trump often reminds conservatives of the importance of the president's power to fill court vacancies

(CNN) Donald Trump is expanding the list of individuals he would consider naming to the Supreme Court, just days before the first presidential debate, in what appears to be his latest effort to shore up Republican and minority support.

Trump's latest additions put a sitting Republican senator who isn't supporting Trump and three non-white judges onto Trump's list of potential Supreme Court nominees, bringing the list to 21 names from the previous 10.

The list, which Trump is set to release later Friday, includes: Sen. Mike Lee of Utah, US Court of Appeals Judge Margaret Ryan, Iowa Supreme Court Justice Edward Mansfield, George Supreme Court Justice Keith Blackwell, Florida Supreme Court Justice Charles Candy, US Court of Appeals Chief Judge Timothy Tymkovich, US District Court Judge Amul Thapar, US District Court Judge Federico Moreno and Michigan Supreme Court Chief Justice Robert Young.

A Trump campaign aide confirmed the list, which was first reported Friday morning by NBC News.

The unusual move to release a list, rather than simply naming the kinds of justices he would seek to nominate, as nearly all presidential nominees, including his rival Hillary Clinton, have done, is part of his efforts to reassure conservatives in his candidacy.

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