President Trump said he will announce his choice to fill Justice Anthony Kennedy's seat Monday night. The finalists are believed to be four federal judges: Brett Kavanaugh, Raymond Kethledge, Amy Coney Barrett and Thomas Hardiman. The president tweeted,

"I have long heard that the most important decision a U.S. President can make is the selection of a Supreme Court Justice - Will be announced tonight at 9:00 P.M."

Republicans and Democrats are gearing up for a blistering confirmation process, as Republicans hold a slim majority in the Senate and liberals have expressed fear that Trump's pick could join the conservatives on the court to someday overturn the Roe v. Wade decision.

Fox News Politics Editor Chris Stirewalt sat down with Fox News Radio's Guy Benson and Marie Harf to give his insight into President Trump's nomination. 

On who he predicts Trump will nominate: So the Times is reporting, and no one is disputing, that the president was down to two that it was Kavanaugh and Hardiman. Now Hardiman is the most "Gorsuch-ian," I would say, selection here. He was the runner up to Gorsuch. Kavanough is the interesting one. He's a "Bushie." He was staff secretary for George W. Bush. Kavanaugh's the easiest to get to 50, but he's probably also the easiest for Democrats to vote against because they can oppose him for those very things. (1:12)

On the secrecy of who the nominee is: Well, to a substantial degree they've outsourced it, which makes it easier between the Federalist Society and Mitch McConnell. So, they've outsourced this much as they did with Gorsuch but now there's a more cohered way of doing it and that means it doesn't go through the normal bramble in the West Wing. (3:34)

On Federalist Society: I don't find the Federalist Society's involvement here any more pernicious than I find the American Barr Association's involvement in picks for Democrats. It's a vetting group. It's not like they're not transparent about what they're doing and what they want.  (11:02)

On if the Supreme Court nomination affects Senate race predictions: It absolutely will because its an intensifier for both sides. If the Democrats can succeed in delaying this does it help or hurt them in November? So, McConnell is basically saying we're gonna run this nomination we're going to get it through here in three months and we're gonna be done it's gonna be over before the election.  (15:30)

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