in the regions of the Hunter and Central Coast with the Coalition holding only a single electorate in each without interruption, being: Upper Hunter and Terrigal. Labor generally perform well in the Illawarra and in the Far West mining town of Broken Hill. Greens The Greens have solidified support within the Inner West city region of metropolitan Sydney at the expense of Labor. There has been little to no opposition from the Liberals or their predecessors in seats where left-wing candidates have always won by substantial margins such as the current Balmain and Newtown and the former related seats such as Leichhardt, Phillip, Elizabeth, Rozelle and Port Jackson. With the loss of these reliable seats, this creates a harder task for Labor to form majority government into the future. The Greens have seen localised success in the Northern Rivers seat of Ballina which entirely encompasses the Byron Bay district. 'Blue Ribbon' and 'Hard Labor' electorates The following lists current electorates where the opposing party (Liberal/National versus Labor/Greens) have never won each seat or its direct predecessor following a redistribution or since the abolition of proportional representation of the lower house in 1927: Labor/Greens Aurburn Balmain Bankstown Canterbury Fairfield Lakemba Liverpool Mount Druitt Newtown Shellharbour Summer Hill Wallsend Wollongong Liberal Baulkham Hills Castle Hill Davidson Epping Hornsby Ku-ring-gai North Shore Pittwater Terrigal Vaucluse Nationals Clarence Coffs Harbour Oxley Port Macquarie Tamworth Upper Hunter Note: Labor and Greens have been grouped together as it is historically evident that the electorates of Newtown and Balmain would likely never be won by a centre-right candidate and were held by the Labor party for nearly 80 years. Marginal seats For governments to change hands, generally there is a quantity of marginal electorates that determine the result of the election which sustain the most attention from the major parties. In New South Wales, most of these electorates are located in Western Sydney and surrounds and generally after redistribution by the New South Wales Electoral Commission they remain marginal or ± 5% of the previous margin. In the case of electorates that more than often side with the incoming or continuing government, known as a bellwether, the electorate of Monaro holds the record for all but one (1995) election since 1927 in having sided with the government of the day, the other common bellwethers being Oatley (formerly Georges River) and Ryde (formerly Gladesville and Fuller). Other electorates