Herb Conaway, a member of the New Jersey General Assembly, won a five-way Democratic primary for a seat in the U.S. House representing communities in the central and southern part of the state.
Mr. Conaway, 61, a physician with a law degree who was first elected in 1997, had won endorsements from the Democratic organizations in Burlington, Monmouth and Mercer Counties.
He made health care issues a key part of his campaign.
“I will continue to defend a woman’s right to choose and a patient’s right to consult with physicians to direct their health care,” said Mr. Conaway, who has been Assembly health committee chairman for 18 years.
The District 3 seat became open last fall when the incumbent, Representative Andy Kim, announced plans to run for the Senate seat held by Robert Menendez.
Mr. Kim unseated a two-term Republican, Tom MacArthur, in 2018. Since then, redistricting has made the district significantly more Democratic.
Mr. Kim’s decision to seek higher office was the first of two major developments to shape the race. The second was a court decision forcing Democratic officials across the state to redesign their primary election ballots. In the past, those candidates endorsed by party leaders were given preferential placement on the ballot — placement known as “the county line.” That is no longer the case, and it threw election night expectations into doubt across the state.
Mr. Conaway’s chief competitor was Carol Murphy, 61, a member of the General Assembly who took office in 2018 and in the past worked for lawmakers. Mr. Conaway and Ms. Murphy worked together in the Assembly and had similar voting records.
The other Democrats in the race were Joe Cohn, a lawyer from Lumberton; Brian Schkeeper, a 44-year-old teacher from Medford; and Sarah Schoengood, 30, a seafood business owner who was a plaintiff in the ballot lawsuit.
The Republican candidates were Michael F. Faccone of Freehold; Shirley Maia-Cusick of Medford, an immigration consultant; Rajesh Mohan of Holmdel, a cardiologist; and Gregory Sobocinski of Southampton, a financial adviser.