The following is a Mackerras pendulum for the 2009 Queensland state election.
"Very safe" seats require a swing of over 20 per cent to change, "safe" seats require a swing of 10 to 20 per cent to change, "fairly safe" seats require a swing of between 6 and 10 per cent, while "marginal" seats require a swing of less than 6 per cent.
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