Apart from the challenges she faced to negotiate a Brexit deal, Therasa May also had a difficult time having her ministers stick to their jobs, according to data from UK Institute for Government.
Change over the Years
Here's a chart showing the number of ministerial resignations outside reshuffles from 1979 to July 2019.
Exodus due to Disagreement
The majority of ministerial resignations under Theresa May were due to disagreement, while perviously most ministers left for personal reasons.
Among the 24 ministers who disagreed with May, 22 had a different opinion on European policy in regard to Brexit.