Queensland's political system is set for its biggest shake-up in decades as a referendum for fixed four-year terms looks likely to succeed.

On Sunday afternoon, just under half of the three million votes had been counted, the yes vote held a 53.16 per cent margin to the no vote's 46.84 per cent.

The Palaszczuk Government remained cautiously optimistic after driving the yes campaign with advertisements and a bipartisan promotional tour in the week leading into polling day.

Road Safety Minister Mark Bailey said Queenslanders had decided they wanted a stable government.

"I think Queenslanders are showing good sense in terms of having provisions that other states have had for a long time," he said.

Shadow Attorney-General Ian Walker said the result made sense........ Read More