Arati Kreibich Josh Gottheimer
CNN  — 

Two years ago, Arati Kreibich volunteered to help reelect New Jersey Rep. Josh Gottheimer. In Tuesday’s Democratic primary, she is running to replace him.

The split came slowly, she said, and then all at once. When Gottheimer and a band of moderate and conservative Democrats pushed to quickly pass a controversial border aid bill in 2019, effectively ending efforts in the House to add new protections to Senate legislation, Kreibich felt betrayed and decided to challenge him in 2020.