Former attorney general William P. Barr is President Trump’s leading candidate to be nominated to lead the Justice Department — a choice that could be made in coming days as the agency presses forward with a probe of Russian interference in the 2016 election, according to multiple people familiar with the deliberations.

Barr, 68, a well-respected Republican lawyer who served as attorney general from 1991 to 1993 under then-President George H.W. Bush, has emerged as a favorite candidate of a number of Trump administration officials, including senior lawyers in the White House Counsel’s Office, these people said. Two people familiar with the discussions said the president has told advisers in recent days that he plans to nominate Barr.

One person familiar with the discussions cautioned that while Barr is the leading candidate, the decision is not final and the president could decide to pick someone else.