This British prime minister won a rare third term in June
The term 'Prime Minister' was first used to describe Walpole as the most important 
... Won 1761 election but was forced to resign by King George III ... 1790 Second 
Term 28th July 1790  25th May 1796 Third term 29th June ..... 24th June 2016 
resigned when Referendum on EU led to Britain exiting the EU.