WASHINGTON — President Trump took a moment on Wednesday to celebrate his success confirming his judicial appointments, an achievement crucial to maintaining his hold on conservatives and on evangelical voters as he heads into an election year fighting off impeachment by the House.

With another flurry of Senate judicial confirmations this week, the Trump administration will have placed 45 conservative judges on the nation’s appeals courts — the federal courts where most final rulings are issued. The tally means one-quarter of all appellate court judges will have been installed by Mr. Trump.

And that is in addition to the two Supreme Court justices confirmed since he took office and 112 district court judges put on the bench, with more on the way. Many will be handing down decisions decades after Mr. Trump is gone from office.

“We are going to be, I think, just about No. 1 by the time we finish — No. 1 of any president, any administration,” the president enthusiastically told an East Room audience that included Republican members of the Senate Judiciary Committee as well as Leonard Leo of the Federalist Society and other conservative judicial activists who helped the White House identify and advance the judicial nominees. “This is really fantastic.”