Today Is...Robert Walpole Becomes The First Prime Minister of Great Britain

Robert Walpole has two claims to Prime Ministerial fame, not only was he the first but he was also the longest serving, staying in the job for 20 years and 314 days and since him we have had 20 Conservatives, 16 Whigs, 7 Liberal, 6 Labour and one National Labour Administrations and today finds Rishi Sunak with the keys to Number 10 jingling in his front trouser pocket.
Margaret Thatcher was the first female Prime Minister in 1979 followed by Theresa May and the joy which was Liz Truss who lasted 44 days, less than the contest to get her in the post in the first place, before her own side screamed 'For the love of God Woman, Just Go' making her the shortest serving. 
Academics, Members of Parliament, the general public and journalists alike have attempted to rank all the Prime Ministers and Winston Churchill, David Lloyd George, Clement Attlee and Margaret Thatcher generally appear toward the top of rankings, while Anthony Eden generally appears at the bottom although in my time such was the dislike of Margaret Thatcher, that even decades after she was last seen in tears peering out from the window of a taxi as she was driven away, the mere mention of her name still stirs people to show their disapproval of her.
Tony Blair is the nearest rival to her for most disliked Prime Minister and his statue would be very quickly spray painted with Anglo-Saxons words but cleaning up the Thatcher statue would be a full time job.
The Prime Ministers are elected using the 'First Past The Post' system of voting which takes the 650 constituencies in the United Kingdom and electors vote for whoever is representing their party in that area and is therefore elected and becomes the Member of Parliament to represent the people of that area and counts as 1 MP for that party and at the end of the night, when all the winners of the constituencies is counted up, the party that has the most MP's is the winner and forms the new Government.
The First Past The Post name comes from the way that if one party reaches 326 MPs (out of the 650), they cannot be beaten so 326 is the magic number of MPs.
Whoever wins become the Government and the leader of that party becomes Prime Minister and the parties are split between the right wing Conservatives, the left wing Labour Party and the centre left Liberal Party although their are smaller parties such as the Greens.
What it all means is that when you vote you are not directly voting for who you want to be Prime Minister but who you want to represent you in the House of Commons and by consequence of that, deciding who becomes the Prime Minister.
That doesn't stop a right pillock being elected, a look at the recent dullards in place proves that but that's how we roll here.