More than half of seats in last week's council elections went to the Tories, despite the party securing 44% of votes.
Critics are now calling for sweeping changes to Britain's electoral system, amid fears voters are being ignored over and over again.
Taking the results of just county, unitary and metropolitan councils which held full elections, the Tories took 44% of the overall vote, but this was enough to win 53% of the total number of seats up for grabs.
In one area, Staffordshire, the party secured more than eight out ten seats, despite claiming 56% of votes.
Across England, Wales and Scotland, Boris Johnson 's party won 1,425 seats - and a clear majority of over 50% of the seats in 25 out of 37 councils.
© Getty ImagesCampaigners have called for election reform amid fears many voters are being ignored under the current system
Meanwhile, Labour took a 23% share of the vote, and 594 seats - 22% of the total number of seats contested.
The Lib Dems secured 11% of the votes and won 305 seats, while the Green Party won just 36 seats, despite winning a 9% vote share.
Another 11% of voters cast their ballot for an independent candidate, or one of the fringe parties, such as Reform or UKIP.
These candidates picked up a combined total of 285 seats - 11% of the total number up for election.
© NurPhoto via Getty ImagesVoters arrive at a polling station
However, campaigners have long been making the case for Britain's "First Past the Post" (FPTP) voting system to be scrapped, in favour of a proportional voting system (PR).
Under PR, the number of seats each party wins would match the share of votes received.
That would still have meant a clear victory for the Conservative Party.
But instead of holding 1,425 seats, the Tories would have won 1,138 - 287 fewer than the party picked up on election night.
That would give the Tories a clear majority of 51% of the seats in six councils, rather than 25, and 50% of the seats on Worcestershire County Council, with one seat still currently vacant.
© VICKIE FLORES/EPA-EFE/REX/ShutterstockThe Tories would have secured 286 less seats if proportional representation was in place
Under PR, Labour would have picked up an additional 45 seats, taking the party to a total of 639, and numbers of Lib Dem councillors would be swelled by 107, giving the party to 412 seats.
But the Green Party has the most to gain. Under PR, the party would have won 226 seats - that adds up to 194 more Green councillors than were actually elected.
However, many of the independent candidates who stood on a local platform would not have secured enough votes to gain a seat.
Even if all votes cast for independent and fringe party candidates were lumped together under one banner, they would have won 21 fewer seats.
© AFP via Getty ImagesCampaigners say the 'first-past-the-post' system needs to change
The Electoral Reform Society has relaunched a petition calling for England's voting system to be changed.
It says that under the current voting system, ballots not cast for the winning candidates in each ward go to waste.
It believes PR would be a much fairer system and would allow more people's voices to be heard.
Dr Jess Garland, director of policy and research at the Electoral Reform Society, said: "Behind these figures are thousands of voters being ignored - often election after election.
"These one-party-takes-all outcomes are a deadweight on our democracy, with voters feeling silenced or taken for granted. When a party can get near 100% representation on a fraction of the vote, something is clearly wrong.
"People will look at these outcomes and think - how can this be fair? It isn't, and it's time for change.
"The broken, winner-takes-all voting system used for England's councils creates local one-party states that too often seem immune from challenge.
© PAThe current system is 'broken', according to reformists
"Voters deserve fair, proportional representation, something that's impossible under First Past the Post."
Proportional representation means any voting system where the number of seats a party secures matches its share of the vote.
However, there are a number of different PR systems which can be used.
While FPTP decided the outcome of all council votes across England, elections to the Welsh Senedd, Scottish Parliament and London Assembly all used a proportional voting system known as the Additional Member System (AMS).
With this system, voters have two ballot papers.
On the first, voters are asked to use a cross to mark the candidate they want to be their constituency representative.
The second ballot is a list of political parties standing in a wider region made up of multiple constituencies.
However, Home Secretary Priti Patel has already unveiled plans to switch all future mayoral elections in England to a FPTP system.
Ministers are pressing ahead with changes after Labour won 11 out of 13 mayoral posts contested across England.
Meanwhile, the constituency vote retains the First Past the Post system to elect constituency MPs, but the regional vote uses proportional representation to elect additional, regional MPs.
It's aim is to provide a proportional parliament, but also keep a single local representative.
However, the Electoral Reform Society sees the "Single Transferable Vote" system as the "gold standard".
Under this system - which is used for local elections in Scotland and Northern Ireland - each elector marks their ballot against their most preferred candidate, but then also marks back up choices.
If their first preference is eliminated (by not receiving enough votes), their ballot is transferred to a back-up selection, rather than being discarded.
The Electoral Reform Society petition, calling for changes to the voting system, can be found here.