houses, and is presented for royal assent. The only time this procedure was invoked was in the 1974 joint sitting.

Trigger event

The double dissolution provision comes into play if the Senate and House twice fail to agree on a piece of legislation (in section 57 called a "proposed law", and commonly referred to as a "trigger"). When one or more such triggers exist, the Governor-General may dissolve both the House and Senate - pursuant to section 57 of

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