Though New Jersey’s 11th Congressional District, full of affluent commuter suburbs, is solidly Democratic, it hasn’t traditionally been a left-wing stronghold. But Mejia’s message resonated, and now she’s close to an upset victory. On election night last week, one of Mejia’s opponents, a former congressman, Tom Malinowski, was so far ahead in the early vote returns that the election analytics site Decision Desk HQ called the race for him. But as Election Day ballots came in, the site retracted. As I write this on Monday, the race is still too close to call, but Mejia is ahead by 868 votes, with fewer than 3,000 mostly provisional ballots left to count.