Much attention has been paid to the way Britain’s voting system is biased against the Lib Dems: they could end up with more votes than Labour or the Conservatives – but win half as many seats. What is not appreciated is that the reason why this is so is also the reason why, once the party passes a threshold – around 38% - it starts to garner seats in massive numbers. With 40% they would probably have an outright majority, With 42% they win by a landslide. The main reason is that with, say 30-35%, they come second in a vast number of seats, but first in only 100 or so. But as they approach 40%, these second places start converting into first places; each extra percentage point yields them a barrow-load of seats.The answer to the question "are the Lib Dems likely to win outright?" remains at "Probably not". The Lib Dems' best chance is to become the linchpin in a coalition government and demand a replacement of the first-past-the-post system with preferential voting or even proportional representation, and hope that the other parties don't decide it's preferable to hold their noses and form a Labour-Conservative coalition to keep the status quo.
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