Newspoll shows SA Labor's support is continuing to sink ahead of election LABOR seems headed for defeat in South Australia's March election with a new poll revealing that support for the party is continuing to sink. The latest Newspoll, reported in today's The Australian newspaper, shows Labor's primary vote in SA slipping to 32 per cent, down one per cent from a March poll. Support for the Liberal Party has risen one per cent to 44 per cent. The Australian says Premier Jay Weatherill has been unable to halt a popularity slide which began under his predecessor Mike Rann. The Newspoll shows opposition leader Steven Marshall's Liberals enjoy a 12-point lead over Labor on a two-party preferred basis - 56 per cent to 44 per cent. This is the Liberal Party's highest recorded primary vote since the 2002 election. Mr Weatherill still leads Mr Marshall as preferred Premier - 41 per cent to 30 per cent. The remaining 29 per cent remain uncommitted. Mr Marshall is up three points from the March poll, while the Premier is down one point. A Labor spokesman said today the party "do not really comment on polls." The Advertiser is seeking comment from the Liberal Party. In Federal politics, it is a different story. A Nielsen poll published in Fairfax newspapers this morning has Labor and the Coalition tied at 50-50. Prime Minister Kevin Rudd has moved ahead of Opposition Leader Tony Abbott as preferred PM, 55 per cent to 41 per cent.