Where are you getting only 3 days from? It's definitely not 3 days from experience. Either that, or every funded political party is breaking the law.
EDIT: rereading your link, it looks like it's 33 days at the local council level, but at the federal level it's 'when the election date is called', which works out to being a similar thing (as it's usually a similar amount of time): the years between elections are free of electioneering.
"relevant period" , in relation to an election, means the period that commences at the end of the Wednesday before the polling day for the election and ends at the close of the poll on that polling day.
3A (2), (3) and (4) all include this language:
the broadcaster must not broadcast under the licence an election advertisement in relation to the election during the relevant period.
They vary only to cover different sorts of broadcasters.
You seem to be ignoring the very important word "not". What you're quoting is the exact opposite of what you think you're quoting - the broadcaster must NOT broadcast an election ad during that 3-day period.
Then you've utterly misunderstood me. I'm saying that there is no electioneering between elections, only in the immediate lead-up to one - it's pretty quiet here in the intervening years.
Rereading your link, it seems I am in error. You certainly don't see much in the way of paid political advertising before an election is called though - unlike in the US where there's a frightening amount of electioneering.
EDIT: rereading your link, it looks like it's 33 days at the local council level, but at the federal level it's 'when the election date is called', which works out to being a similar thing (as it's usually a similar amount of time): the years between elections are free of electioneering.