Using a different alias the next year, the same undercover operative infiltrated the congressional campaign of Abigail Spanberger, then a former CIA officer who went on to win an important House seat in Virginia as a Democrat. The campaign discovered the operative and fired her.

Both operations were run by Project Veritas, a conservative group that has gained attention using hidden cameras and microphones for sting operations on news organizations, Democratic politicians and liberal advocacy groups. Seddon’s role in the teachers’ union operation — detailed in internal Project Veritas emails that have emerged from the discovery process of a court battle between the group and the union — has not previously been reported, nor has Prince’s role in recruiting Seddon for the group’s activities.