Mr Trump is likely to announce his nominees to replace Supreme Court Justice Anthony Kennedy on Monday. Foreseeing inevitable news break-ins to offer coverage and analysis, broadcasters are rejiggering their primetime lineups so as to keep too much fresh summer fare from being preempted.
"This is a nightmare for red-state Democrats to oppose a highly qualified nominee, and all four of these people are highly qualified-been on the court, know what they're doing, mainstream judges", Mr.
Top contenders for the role have included federal appeals judges Brett Kavanaugh, Raymond Kethledge, Amy Coney Barrett and Thomas Hardiman.
Asked about the details of the selection process, Mr Trump said he has it down to four people.
"I think in regards to Kethledge and Tom Hardiman they are a little less known by conservatives and their records are a little bit lighter so it might take some time", Leo told ABC's "This Week" on Sunday. Trump finally nominated judge Neil Gorsuch. I think they're all outstanding.
"Nobody really knows", Leo said on ABC's "This Week".
Cuccinelli has said he prefers either Judge Amy Coney Barrett or Sen. While Barrett is problematic on the abortion issue, Kavanaugh is unpopular among some Republican senators because of his track record as staff secretary under President George W Bush.
Thapar, 49, a Cincinnati-based federal appeals court judge, was among the first four candidates interviewed by Trump on July 2.
Sen. Richard Blumenthal (D-Conn.), a member of the Judiciary Committee that will hold the confirmation hearing for Trump's court pick, said Sunday that it's clear to him that Trump wants a justice committed to overturning Roe v. Wade.
He then added: "And I will devote all my energies to ensuring that we confirm the kind of Supreme Court justice America needs: a justice who says what the law is, not what she wants it to be; a justice who calls balls and strikes instead of swinging for the fences; a justice whose foremost allegiance is to the American people and to the Constitution". "I've never seen a president of the United States in effect make himself a puppet of outside groups and choose from a group of right-wing fringe ideologues that are prepared on this list". A more conservative justice could move the court to the right, potentially for decades, and could potentially vote with the majority to overturn Roe v. Wade.
In return, Hogue said, senators should demand of the nominee in the course of the confirmation process that they give an affirmative declaration that they would uphold Roe v Wade.