The latest Newspoll survey shows that Labor starts the campaign with its support virtually unchanged in the past fortnight at 37 per cent to the Coalition's 44 per cent, down one percentage point, the Australian reported.
On a two-party preferred basis, the Coalition has maintained its election-winning lead of 52 per cent to Labor's 48 per cent, which is unchanged since mid-July.
Although Rudd remains the voters' preferred prime minister and is more popular than the Opposition Leader, his personal support slumped into negative for the first time since he resumed the leadership in June and his support as preferred prime minister is at its lowest, the survey shows.
Rudd's net satisfaction rating - the difference between satisfaction and dissatisfaction - is now minus nine, the first time he has had a negative rating since his return.
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The Opposition Leader's satisfaction rating continued its poor run for all of this year at 34 per cent, down a point from two weeks ago, as dissatisfaction remained an unchanged 56 per cent for a net satisfaction rating of minus 22.
Support for Abbott was steady on 33 per cent, down a point in two weeks, leaving Rudd with a lead over the Opposition Leader of 14 percentage points.
Meanwhile, Labor has begun its campaign for September 7 elections by announcing USD 200 million in new funding for the automotive industry.
The policy, announced today by Innovation Minister Kim Carr, also includes a plan to introduce a 100 per cent target for Australian made cars in Commonwealth fleets.
"The automotive industry is vital to Australia's economic future and we are determined to increase sales of locally made cars," Senator Carr added.