Where the election will be won and lost

The electoral maths on Saturday is simple — win 76 seats and you win government.But that simplicity also obscures a whole lot of complexity, made even harder to understand because standard electoral maps have been lying to us all for years.Let's cut through the bluff and the bluster and take a look at the true shape of our electoral landscape — and what that might mean for the results on Saturday night.Australia is divided up into 150 electorates, each with approximately 114,000 voters.The seat of Durack in Western Australia is the country's biggest.Compare that to the size of Grayndler — can you even spot that black dot over in inner-city Sydney?Well, here's the thing: both of them count the same in the election, as they each elect a single MP to the House of Representatives.Australia's population is concentrated in the cities, which is why more than half of our electorates are located in inner-city and outer metro areas.And yet, they're barely visible on the national map.That's why w...