David Crisafulli has sold the Queensland public on a crime crisis. It could prove to be his downfall

Opposition leader creates political timebomb with election pledge to resign if crime victim numbers do not fall under an LNP government

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David Crisafulli's task in Thursday's Queensland election debate was to avoid shooting himself in the foot.

He just about managed that. But the Liberal National party leader's pledge - that if he wins government he would resign in four years' time if crime victim numbers have not reduced - might be the equivalent of putting a political timebomb under the premier's desk.

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Ben Smee is Guardian Australia's Queensland state correspondent