President Trump is expressing fresh interest in Judge Thomas M. Hardiman, the runner-up for last year’s Supreme Court vacancy, as he pushes his decision on a replacement for Justice Anthony M. Kennedy into the final hours before his self-imposed deadline of Monday night, three people close to the process said. All cautioned that Mr. Trump could go a different way before he reveals his choice in a prime-time address on Monday. He has said positive things to associates about Judge Amy Coney Barrett, a staunch social conservative, the people familiar with the process said, and he has not ruled out...