Ipswich Labor councillor Paul Tully - a well known numbers man for the ALP - predicts just 5000 votes across Queensland in key seats could decide the election.
Cr Tully correctly predicted Labor would only win seven seats in the 2012 poll.
Cr Tully said the ALP could win office in a hung parliament with the support of a "block of four" independent and Katter Australia Party MPs, holding the balance of power.
He predicts the LNP will fall one seat short of winning government in their own right.
|Cr Paul Tully|
Cr Tully, believes Labor has a strong chance of winning four other seats including Pumicestone, which has a margin of 12 per cent, Kallangur, 12.4 per cent and Pine Rivers, 13.7 per cent where the Opposition campaigned on Wednesday.
He predicts the ALP could win 41 seats, the LNP 44 seats and a block of four, including independents Chris Foley (Maryborough) and Peter Wellington (Nicklin) and two Katter's Australian Party MP could be the deciders in a hung parliament.
"It will come down to about 5000 votes in key seats," Cr Tully said.
"And a lot of those seats are going to be won by 100 or 200 votes," he said.
"I think it is going to be very, very close."
Polling booths open at 8am and close at 6pm.