Electoral districts of South Australia

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Since 1970, the South Australian House of Assembly (the "lower house") has consisted of 47 single-member electoral districts consisting of approximately the same number of enrolled voters. The district boundaries are regulated by the State Electoral Office, according to the requirements of the South Australian Constitution and are subject to mandatory redistributions by the State Electoral Office in order to respond to changing demographics.

Boundary adjustments

Electoral boundaries are adjusted after each election. The primary consideration is to attempt to ensure that the party that obtains 50% or more of the overall vote at a general election is able to form a government. The number of electors in each district must be within 10% of the average at the time of the redistribution order. After these primary considerations, other issues are considered, including economic, social and regional communities of interest.[1] Despite this elaborate and expensive process, the system is not particularly reliable; cases where the party forming government has received less than 50% of the two-party-preferred vote are not un-common, and have occurred in three of the last four elections.

Election 1970 1973 1975 1977 1979 1982 1985 1989 1993 1997 2002 2006 2010 2014
Govt ALP ALP ALP ALP Lib ALP ALP ALP Lib Lib ALP ALP ALP ALP
# of seats 27 26 23 27 24 24 27 22 37 23 23 28 26 23
% of seats 57.4 55.3 48.9 57.4 51.1 51.1 57.4 46.8 78.7 48.9 48.9 59.6 55.3 48.9
% of vote 53.3 54.5 49.2 53.4 55.0 50.9 53.2 48.1 61.0 51.5 49.1 56.8 48.4 47.0

While South Australia's total population is 1.7 million, Adelaide's population is 1.3 million − uniquely highly-centralised, over 75% of the state's population resides in the metropolitan area and has 72% of seats (34 of 47) alongside a lack of comparatively-sized rural population centres, therefore the metropolitan area tends to decide election outcomes. At the 2014 election for example, although the state-wide two-party vote (2PP) was 47.0% Labor v 53.0% Liberal, the metropolitan area recorded a 2PP of 51.5% Labor v 48.5% Liberal.[2]

List of the current 47 electoral districts

Maps

Map of rural electoral districts showing results from the 2014 election and changes since.
Map of metropolitan electoral districts showing results from the 2014 election and changes since.


Numbers of Electorates and Members

Since 1938, the South Australian House of Assembly has had single-member electoral districts. From 1938-1968 there were 39 districts. Since 1970 there have been 47 electoral districts. From 1857-1933, the number of districts varied between 12 (1912–1915) and 27 (1890–1901). Each district returned from 1-6 members.

Parliaments Years elected Districts Members
1, 2 1857, 1860 17 36
3, 4, 5, 6, 7 1862, 1865, 1868, 1870, 1871 18 36
8, 9, 10 1875, 1878, 1881 22 46
11, 12 1884, 1887 26 52
13, 14, 15, 16 1890, 1893, 1896, 1899 27 54
17, 18, 19, 20 1902, 1905, 1906, 1910 13 42
21 1912 12 40
22, 23, 24, 25, 26,
27, 28
1915, 1918, 1921, 1924, 1927,
1930, 1933
19 46
29, 30, 31, 32, 33,
34, 35, 36, 37, 38,
39
1938, 1941, 1944, 1947, 1950,
1953, 1956, 1959, 1962, 1965,
1968
39 39
40, 41, 42, 43, 44,
45, 46, 47, 48, 49,
50, 51, 52, 53
1970, 1973, 1975, 1977, 1979,
1982, 1985, 1989, 1993, 1997,
2002, 2006, 2010, 2014
47 47

Electoral Districts

This table gives the number of members returned by each electoral district at each election.

1857
-1862
1862
-1875
1875
-1884
1884
-1890
1890
-1902
1902
-1912
1912
-1915
1915
-1938
1938
-1956
1956
-1970
1970
-1985
1985
-1993
1993
-1997
1997
-2002
2002
-2014
2014
-now
Districts 17 18 22 26 27 13 12 19 39 39 47 47 47 47 47 47
Members 36 36 46 52 54 42 40 46 39 39 47 47 47 47 47 47
District
Adelaide, City of 6
Adelaide   4 4 3 1 1 1 1 1 1 1 1
Albert   2 2 2   2 1 1
Albert Park   1 1
Alexandra   4 4 3 1 1 1 1
Angas   1 1
Ascot Park   1 1
Ashford   1 1
Barossa 2 2 2 2 2 3 3 3 1
Baudin   1 1 1
Bragg   1 1 1 1 1 1
Briggs   1
Bright   1 1 1 1
Brighton   1
The Burra and Clare 3
The Burra   2 2
Burra   2 2   1 1
Burra Burra   3 3 3
Burnside   1 1
Chaffey   1 1 1 1
Cheltenham   1 1
Coles   1 1 1 1
Colton   1 1 1 1
Croydon   1 1
Custance   1 1
Davenport   1 1 1 1 1 1
Dunstan   1
East Adelaide   2 2 2
East Torrens 2 2 2 2 2   3
Edwardstown   1
Elder   1 1 1 1
Elizabeth   1 1 1 1 1
Encounter Bay 2 2 2 2 2
Enfield   1 1 1
Eyre   1 1 1
Finniss   1 1 1 1
Fisher   1 1 1 1 1 1
Flinders 1 2 3 2 2 3 3 2 1 1 1 1
Florey   1 1 1 1 1 1
Frome 2 2 1 1 1 1 1 1 1
Gawler 1 1
Giles 1 1 1 1
Gilles 1 1
Gladstone 2 2
Glenelg 1 1 1
Goodwood 1
Gouger 1 1 1
Goyder 1 1 1 1 1 1
Gumeracha 2 2 2 2 2   1 1
Hammond   1 1 1
Hanson 1 1 1 1
Hart 1 1
Hartley 1 1 1 1 1 1
Hayward 1
Henley Beach 1 1
Heysen 1 1 1 1 1 1
Hindmarsh 1 1
Kaurna 1 1 1 1
Kavel 1 1 1 1 1 1
Lee 1 1 1 1
Light 2 2 3 2 2 1 1 1 1 1 1 1 1
Little Para 1 1
MacKillop 1 1 1 1
Mallee 1
Mawson   1 1 1 1 1 1
Millicent 1 1
Mitcham 1 1 1
Mitchell   1 1 1 1 1 1
Morialta 1 1
Morphett   1 1 1 1 1 1
Mount Barker 2 2 2 2 2
Mount Gambier 1 1 1 1 1 1 1
The Murray 1
Murray 3 3 3 1 1 1
Murray-Mallee 1
Napier   1 1 1 1 1 1
Newcastle 2 2   2 1 1
Newland   1 1 1 1 1 1
Noarlunga 2 2 2 2 2
North Adelaide 1 2 2   2
Northern Territory 2 2
Norwood 1 1 1 1 1 1 1
Onkaparinga 2 2 2 2 2 1 1
Peake   1 1 1 1
Pirie 1
Playford   1 1 1 1 1 1
Port Adelaide 2 2 2 2 2 3 3 2 1 1 1 1
Port Pirie 2 1 1
Price 1 1 1
Prospect 1
Ramsay   1 1 1 1 1
Reynell   1 1 1 1
Ridley 1 1   1
Rocky River 1 1 1
Ross Smith 1 1 1 1
Salisbury   1
Semaphore 1 1 1 1
Schubert   1 1 1
Spence   1 1 1 1
Stanley 2 2 2 3 3 2 1
Stirling 1 1
Stuart 1 1 1 1 1 1 1
Sturt, The 2 2
Sturt 2 2 2   3
Taylor   1 1 1 1
Tea Tree Gully 1
Thebarton 1
Todd 1 1
Torrens 5 5 1 1 1 1 1 1 1
Unley 1 1 1 1 1 1 1 1
Victoria 1 2 2 2 2 2 1 1 1 1
Victoria and Albert 3 3
Waite   1 1 1 1
Wallaroo 3 2 2 3 3 2 1 1
Walsh   1
West Adelaide 2 2 2 2
West Torrens 2 2 2 2 2   2 1   1 1
Whyalla   1 1 1
Wooroora 2 2 2 3 3 3
Wright   1 1 1 1
Yatala 2 2 2 2 2
Yorke Peninsula 2 1 1
Young 1
1857
-1862
1862
-1875
1875
-1884
1884
-1890
1890
-1902
1902
-1912
1912
-1915
1915
-1938
1938
-1956
1956
-1970
1970
-1985
1985
-1993
1993
-1997
1997
-2002
2002
-2014
2014
-now

Abolished electoral districts

These electoral districts no longer exist:

See also

References

  1. Lua error in package.lua at line 80: module 'strict' not found.
  2. Metropolitan 2PP correctly calculated by adding raw metro 2PP vote numbers from the 34 metro seats, both Labor and Liberal, then dividing Labor's raw metro 2PP vote from the total, which revealed a Labor metropolitan 2PP of 51.54%. Obtained raw metro 2PP vote numbers from ECSA 2014 election statistics, ECSA 2014 Heysen election and ABC 2014 Fisher by-election.

External links