The latest Newspoll shows support for Australian Prime Minister Kevin Rudd and Labor has fallen.
Mr Rudd claimed underdog status as he announced on Sunday that Australia would go to the polls on 7 September.
The poll of 1147 voters, conducted this weekend for The Australian newspaper, shows that although Mr Rudd is still more popular than Opposition Leader Tony Abbott, his support as preferred prime minister is at its lowest point.
AAP reports voter satisfaction with Mr Rudd dropped four percentage points in the past two weeks.
It went from 42% to 38%, while his dissatisfaction jumped six points from 41% to 47%.
Mr Abbott's satisfaction rating continued at 34%, down a point from two weeks ago. His dissatisfaction was unchanged on 56%.
The survey found voter support for Labor had fallen one percentage point in the last fortnight to 37%, compared to 44% for the coalition.
On a two-party preferred basis, the coalition kept its lead of 52% to Labor's 48%.
Support for the Greens is down one point to 9%, compared to 11.8% at the last election.