The take-over: Prime Ministers without a popular mandate, 1916-2016

There are more or less two routes to becoming Prime Minister. You can either win a General Election or win a party leadership election to become head of the largest party when a Prime Minister leaves. Having just achieved the second route, Theresa May has become our ‘takeover’ leader. Here, Ben Worthy discusses the history of this route to power, its successes and – more often than not – its failures.