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Boris Johnson wouldn't automatically be the Prime Minister if the UK had used proportional representation in the General Election.

With our first-past-the-post system, the Tories won their biggest majority since Margaret Thatcher in 1987 - with 364 seats and 43.6% of the vote.

But the political landscape would look very different if we had a more proportional voting system, because currently a party can win a huge amount of the vote share but not win any seats - as only the party in first in each constituency gets a seat.

There have been many critics of first-past-the-post in the past, arguing that it leads to "safe seats" that can never change hands and encourages people to vote tactically instead of for who they would actually want to win overall.

(Image: PA)

In the election the amount of votes per seat won varied wildly. For instance the Scottish National Party netted a seat for every 26,000 votes they received. By contrast The Greens won 857,513 votes and only won one seat, Wales Online reports.

Labour needed to win more than 50,000 votes to claim a seat while the Conservatives only needed to win 38,000 votes to send a Tory to Parliament because their voters were distributed more efficiently.

We worked out how our election would have looked if our MPs were selected proportially.

The headlines this morning would be very different if we had proportional representation:

No overall majority for any party

The Conservatives win 75 seats fewer

The Greens go from one seat to 17

The amount of SNP seats halves

A government could only be formed if parties worked together

The Brexit Party win 13 seats

Under this system, it's likely Boris Johnson would at best be struggling to find coalition partners or other parliamentary support rather than sailing back in to Downing Street as he has today.

In 2011, the UK held a referendum on an Alternative Vote system when the Liberal Democrats entered into a coalition with the Conservative Party.

Unlike proportional representation, AV uses a ranking system for candidates in each seat and didn't go down well with the British public who overwhelmingly voted 'no' to electoral reform with 13 million (67.90%) voting against and just six million (32.10% voting in favour.