Premier Carmen Lawrence has signed Howard Sattler's so-called 'election contract' calling on her to guarantee that she will not break any election commitments when re-elected on Saturday.
The Premier said that while the Sattler 'contract' might be described as a gimmick, it contained a message to the community about honesty and integrity in government.
"The document amounts to a personal guarantee that the State's finances are in good shape and that there is no hidden debt or other problems," Dr Lawrence said.
"It gives further substance to our commitment to honour our election promises without increasing State taxes and charges."
Dr Lawrence said there was no longer room for Mr Court to avoid questions about new taxes or increases in existing taxes and charges to fund his election promises.
"He now knows that our promises have been costed accurately and that they can be implemented within our budget.
"The truth is that there is a big financial black hole in Mr Court's election promises, blocking his path to signing the Sattler document.
"He cannot give a guarantee that taxes will not be increased; he will not explain how he is going to fund his election promises; and he cannot give a guarantee not to break his election promises.
"What that amounts to is that he cannot or will not be honest with the people of Western Australia."
The Premier gave an undertaking to sign the document during this week's television debate with the Opposition Leader.
"Mr Court hedged his bets by saying 'we wanted to read the small print'. I can assure him there is no small print, it is a clear and simple undertaking," the Premier said.