Sydney - Yet again, opinion polls got the result of an Australian state election wrong and gamblers got it right.

Queensland Premier Anna Bligh was Sunday celebrating an historic fifth electoral victory for her underdog Labor Party, as the favoured the Liberal National Party was left wondering how the pollsters could get it so wrong.

Centrebet spokesman Neil Evans said the "smartest" money had been on Labor all along and 16 of the 20 biggest wagers had been for the incumbent to win - despite the pundits predicting their removal from power in Saturday's vote.

Bligh, as well as leaving pollsters red-faced, became the first woman since federation in 1901 to be elected to head a state or federal government. She had been appointed premier in 2007 after Peter Beattie9s retirement from politics. (dpa)