Brian Trainor held on to a commanding lead in the race for 22nd Judicial District Attorney with 23,771 votes of 38 percent of the vote, while Warren Montgomery was comfortably in second place with 15,358 votes, or 25 percent.

With 160 of the 199 precincts reporting, Trainor was the leader all evening, except when the first returns were posted — early votes out of Washington Parish, Alan Black’s stronghold. But while the Bogalusa native was buoyed by that vote, he faded as the bulk of the St. Tammany precincts came in, with 13,273 votes, or 21 percent.

Roy Burns, who was the first to jump in to the race to succeed http://www.theneworleansadvocate.com/news/politics/10551584-171/four-candidates-for-north-shore://">Walter Reed, was in distant last place, not even breaking into five digits with 9,754 votes, or 16 percent.

Walter Reed, who announced he would not seek a sixth term in July, opened the door for the first new DA in 30 years. Trainor is the only one of the four Republicans in the race who worked under Reed, serving as assistant district attorney for eight years before going to work for St. Tammany Parish Sheriff Jack Strain, who has vocally supported his chief deputy’s candidacy. He is on an unpaid leave from that job.

Montgomery, the last of the field to qualify, seized the mantle of outsider, as did Burns.

Follow Sara Pagones on Twitter at @spagonesadvocat.