Dupont’s increasingly erratic behavior in her dislike for the Muggle Prime Minister, Lord Palmerston, resulted in her being forced out.
Palmerston resigned due to a major piece of his legislation being voted down in February 1858.
Priscilla Dupont is forced to step down as Minister for Magic
Date February, 1858
Certainty Stated in canon
Location in Canon Pm: Pottermore
Type of Event Wizarding world