Democrat Andy Kim has defeated two-term Republican incumbent Rep. Tom MacArthur in New Jersey’s 3rd Congressional District, leaving Republicans with just one member in the state’s next congressional delegation. The Associated Press called the race yesterday.

Kim, a former national security adviser in the Obama administration, declared victory last week, but MacArthur did not concede while mail-in and provisional ballots still were being counted.

Kim’s win in the hotly contested race was an upset. He previously had not run for office. He’s the first Asian-American elected from New Jersey.

Read the full story on NJTV News Online, a content partner of NJ Spotlight.

MacArthur’s concession: In a Facebook posting, Rep. MacArthur wrote that he had called Kim to concede.