Two of the Republicans - Lisa Murkowski and Susan Collins - are abortion-rights supporters and could balk at voting for a Trump nominee who would overturn the 1973 Roe v. Wade landmark abortion decision.
McConnell says the situations are not the same.
Republicans hold a narrow 51-49 majority in the Senate, and it's even close because of the absence of ailing Sen. "I actually saw him on television last night where he said he'd love the job".
Those Democrats - Joe Manchin of West Virginia, Joe Donnelly of IN and Heidi Heitkamp of North Dakota- all are facing hard re-election races and could find it hard to oppose the president's second pick.
When asked about recently proposed changes to federal Title X family planning funds that help pay for reproductive healthcare for low-income women, more than half said they are against the changes.
Senate Majority Leader Mitch McConnell, earlier this week said: "The Senate will vote to confirm Justice [Anthony] Kennedy's successor this fall". "They're going to do what they believe is right". And that is why these seats matter so much because - one of my favorite lines about the Supreme Court was by Justice Robert Jackson who served in the 1940s and '50s. "I want qualifications. Somebody that's well qualified, understands the Constitution and the rule of law".
"He's a great guy", Trump said.
The vacancy has given Trump an opportunity to solidify conservative control of the nation's highest court.
Trump indicated that he would stick to a list of possible nominations that was drawn up before the election and includes many conservative and originalist jurists. "From day one, I've heard, outside of war and peace of course, the most important decision you make is the selection of a Supreme Court judge - if you get it". "Judges, and particularly the Supreme Court, have been a resounding success of this administration".
But Democrats haven't given up the fight, with many lawmakers still bitter over Garland's treatment.
Faris published his book in April, months before Kennedy announced his retirement.
Trump did not name the five names on his short list, which he has said will be pulled from a list of 25 judges he first released during the 2016 campaign.
But the Trump family's relationship with Justice Kennedy's family goes beyond friendship. Also of interest are Amul Thapar, who serves on the federal appeals court in Cincinnati; Brett Kavanaugh, a former clerk for Kennedy who serves on the federal appeals court in Washington, D.C.; and Amy Coney Barrett, who serves on the federal appeals court in Chicago.