While we await what is likely to be the coronation of Andy Burnham, we might wonder how it is that in the ten years since the Brexit vote were about to have in the UK our seventh PM... that one every 20 months (on average, some lasted a little less, some a bit longer)?

There are a range of reasons, perhaps most importantly rebellious (impatient) MPs, but it also a job that is difficult to succeed at when the underlying political economic conditions in the UK are so 'challenging'!

#politics

@ChrisMayLA6 I thought the conventional wisdom is that both major political parties have had a realignment: the Tories by becoming committed to Brexit — previously they had been divided about the EU —, and Labour by losing working class voters and gaining professional class ones. Isn't that the primary explanation?

#ukpol

@mpjgregoire

the posited 'realignment' might explain policy shifts, but I'm not sure how it would explain the churn of PMs?