MORRISTOWN, N.J. -- President Donald Trump said Sunday he was still deliberating his decision on a replacement for Supreme Court Justice Anthony Kennedy as his self-imposed deadline for an announcement neared amid furious lobbying and frenzied speculation.

"I'm very close to making a final decision. And I believe this person will do a great job," Trump said as he prepared to return to Washington from a weekend at his New Jersey golf club. Asked by reporters how many people were being considered, the president said: "Let's say it's the four people ... they're excellent, every one. You can't go wrong."

While Trump didn't name the four, top contenders for the role have included federal appeals judges Brett Kavanaugh, Raymond Kethledge, Amy Coney Barrett and Thomas Hardiman. The White House has been preparing information materials on all four, who were part of a longer list of 25 names vetted by conservative groups.

Brett Kavanaugh appears before the Senate Judiciary Committee on April 26, 2004, on Capitol Hill in Washington.Dennis Cook ~ Associated Press, file

Trump has spent the weekend discussing his options with allies and will announce his pick at 8 p.m. today from the White House. He tweeted later Sunday he was looking forward to the announcement and said an "exceptional person will be chosen!"

Savoring the suspense, Trump has sought to keep people guessing in the final hours, hoping to replicate his successful announcement of Justice Neil Gorsuch last year. The White House hoped to keep the details under wraps until he rolls out his pick from the East Room.

In his conversations over the weekend, Trump expressed renewed interest in Hardiman -- the runner-up when Trump nominated Gorsuch, said two people with knowledge of his thinking who were not authorized to speak publicly. But Trump's final decision remained far from clear, and the president wants to keep the guessing game going.

In this image from video, Raymond Kethledge testifies May 7, 2008, during his confirmation hearing for the Sixth U.S. Circuit Court on Capitol Hill in Washington.C-SPAN via AP

Trump has enjoyed teasing details of his process in recent days, saying Thursday he was down to four people and "of the four people, I have it down to three or two." On Saturday, he tweeted a "Big decision" was coming soon. On Sunday he was back to citing "the four people."

Republican Sens. Lindsey Graham of South Carolina and Roy Blunt of Missouri said Sunday they believe any of the top four contenders could get confirmed by the GOP-majority Senate.

"I think we can confirm any of the four names being mentioned," Blunt said on NBC's "Meet the Press." "They're good judges. I think they'd be fine justices of the Supreme Court. I do think the president has to think about who is the easiest to get confirmed here. And I expect we will do that on sort of a normal timetable, a couple of months."

Amy Coney Barrett, United States Court of Appeals for the Seventh Circuit judge, speaks May 19 during the University of Notre Dame's Law School commencement ceremony at the University of Notre Dame in South Bend, Indiana.Robert Franklin ~ South Bend Tribune via AP

The president and White House officials involved in the process have fielded calls and messages and have been on the receiving end of public pleas and op-eds for or against specific candidates since Kennedy announced June 27 he would retire this summer.

Some conservatives have expressed concerns about Kavanaugh -- a longtime judge and former clerk for Kennedy -- questioning his commitment to social issues such as abortion and noting his time serving under President George W. Bush as evidence he is a more establishment choice. But his supporters cite his experience and wide range of legal opinions. Barrett has excited social conservatives since she was questioned about her Roman Catholic faith in her nomination hearings last year, but her brief time on the bench has raised questions.

Judge Thomas Hardiman is seen March 8, 2017, during a meeting with The Associated Press in Philadelphia.Matt Slocum ~ Associated Press, file

Outside adviser Leonard Leo, currently on leave from the Federalist Society, said on ABC's "This Week" on Sunday this kind of jockeying is standard, noting "every potential nominee before announcement gets concerns expressed about them by people who might ultimately support them."

Leo said: "Brett Kavanaugh and Amy Barrett have a lot of name recognition among supporters of the president, and I think that ultimately, when people like them are nominated, you'll see a lot of folks line up."

Of the other two, he added: "Ray Kethledge and Tom Hardiman, they're a little bit less known by conservatives. And their records are a little bit lighter. So, it might take some time."

Hardiman has a personal connection to the president, having served with Trump's sister on the 3rd U.S. Circuit Court of Appeals in Philadelphia.