ADELAIDE MARGIN 4% SITTING MEMBER: KATE ELLIS (LABOR) MAIN RIVALS: DAVID COLOVIC (LIBERAL) JOE HILL (NXT) Labor has been running an aggressive campaign against Liberal candidate David Colovic, constantly reminding voters of an interview in which claimed to shop at the "poor end" of the electorate. Colovic has been focusing on local issues but would have to be extremely lucky to unseat high-profile Labor MP Kate Ellis.
BARKER MARGIN 16.6% SITTING MEMBER: TONY PASIN (LIBERAL) MAIN RIVALS: MAT O'BRIEN (LABOR) JAMES STACEY (NXT) It's always been a Liberal seat but Barker was put on "Xenophon Watch" by worried Liberals during the election campaign. First-term MP Tony Pasin is likely to be re-elected but is facing a strong challenge from NXT candidate James Stacey, who has formerly run for the Senate as a National. 
BOOTHBY MARGIN 7.2% SITTING MEMBER: ANDREW SOUTHCOTT (LIBERAL, RETIRED).
REPLACED BY NICOLLE FLINT MAIN RIVALS: MARK WARD (LABOR) KAREN HOCKLEY (NXT) The retirement of long-time Liberal MP Andrew Southcott could prompt some Boothby voters to begin shopping around.
But former Advertiser columnist Nicolle Flint is likely to hold on to the seat for the Liberals.
GREY MARGIN 13.6% SITTING MEMBER: ROWAN RAMSEY (LIBERAL) MAIN RIVALS: SCOTT MARTIN (LABOR) ANDREA BROADFOOT (NXT) After   Mayo, this is the Liberal seat most vulnerable to the rising popularity of the Nick Xenophon Team. The Arrium steel crisis in Whyalla and the closure of power stations at Port   Augusta have voters worried but Liberal MP Rowan Ramsey is likely to hang on.
HINDMARSH MARGIN 1.9% SITTING MEMBER: MATT WILLIAMS (LIBERAL) MAIN RIVALS: STEVE GEORGANAS (LABOR) DANIEL KIRK (NXT) Submarines, missile test site upgrades, rail and roads - the Federal Government has been throwing money at SA in an effort to save first-term rookie MP Matt Williams.
Former Labor MP Steve Georganas started campaigning again the day after he lost the seat in 2013 but Mr Williams is hopeful of holding onto SA's most marginal seat.
KINGSTON MARGIN 9.8% SITTING MEMBER: AMANDA RISHWORTH (LABOR) MAIN RIVALS: KELVIN BINNS (LIBERAL) DAMIAN CAREY (NXT) Labor's Amanda Rishworth Rishworth has a reasonably comfortable margin of almost 10 per cent after first winning Kingston at the 2007 election.
Kingston regularly switches party support but Liberal Kelvin Binns is unlikely to win this time.
MAKIN MARGIN 5.1% SITTING MEMBER: TONY ZAPPIA (LABOR) MAIN RIVALS: GRAHAM REYNOLDS (LIBERAL) CRAIG BOSSIE (NXT) A 5.1 per cent margin is hardly safe, but Labor MP and former powerlifting champion Tony Zappia is expected to be re-elected by Makin voters.
The Liberals have been busy sandbagging other SA seats and are unlikely to capture Makin this time.
MAYO MARGIN 12.6% SITTING MEMBER: JAMIE BRIGGS (LIBERAL) MAIN RIVALS: GLEN DALLIMORE (LABOR) REBEKHA SHARKIE (NXT) The Adelaide Hills, the Fleurieu Peninsula and Kangaroo Island-based seat will be one of the most closely observed on Saturday night. Liberal Jamie Briggs, who was forced to quit the ministry, is facing a real challenge from his former staffer Rebekha Sharkie, who is standing for the Nick Xenophon Team.
PORT ADELAIDE MARGIN 14.1% SITTING MEMBER: MARK BUTLER (LABOR) MAIN RIVALS: EMMA JANE FLOWERDEW (LIBERAL) MICHAEL SLATTERY (NXT) If the NXT vote ends up being as high as some in the major parties fear it could be, Labor National President Mark Butler could be in trouble. But with such a strong margin, Mr Butler is likely to be re-elected.
STURT MARGIN 10.1% SITTING MEMBER: CHRISTOPHER PYNE (LIBERAL) MAIN RIVALS: MATTHEW LOADER (LABOR) MATTHEW WRIGHT (NXT) Industry Minister Christopher Pyne loves a political fight and he's been battling a serious challenge from both the Labor and NXT parties. Mr Pyne is expected to see off the threat from Labor's Matthew Loader and NXT's Matthew Wright.
WAKEFIELD MARGIN 3.4% SITTING MEMBER: NICK CHAMPION (LABOR) MAIN RIVALS: KATHLEEN BOURNE (LIBERAL) RICHARD INWOOD (NXT) The Liberals lost Wakefield to Labor in 2007 but hope to one day snatch it back. But the closure of GM Holden in Elizabeth makes it likely Labor's Nick Champion will hold on for at leastone more term in Parliament.