The Premier Colin Barnett has made his election pitch to voters, arguing the Labor Party is a risk that West Australians should not take.
Mr Barnett visited the Governor this morning to request the issuing of the election writs.
The Government has now been placed into caretaker mode.
Mr Barnett talked up his achievements in the resources, education and health sectors.
"We will start by standing on our record as a government, a respectable, responsible and decisive government," he said.
"That is in sharp contrast to our predecessors.
"The Labor government was discredited, it was not trusted and it embarrassed this state, with five ministers resigning or being sacked because of inquiries between the Corruption and Crime Commission.
"If you change the government, you change the state."
Mr Barnett described this decade as one of the most important in WA's history, and said the state needs to make sure it secures long term benefits from growth in Asia.
"We have one chance to get it right, one chance to make sure that this state and its people benefit from that economic opportunity."
The Labor leader Mark McGowan has hit back at the Premier's argument.
"The real risk here is Mr Barnett and the fact that he doesn't have a plan for the future and his priorities for Western Australia are all wrong," he said.
"I'm not going to be lectured by Mr Barnett who promotes people like Troy Buswell, the greatest political embarrassment in Western Australian history."
The Premier has also signalled a focus of his campaign will be on federal issues and that only a Liberal government will demand a better deal for WA.
"This government has stood up to Canberra on the mining tax and getting a fair share of the GST for WA," he said.
"If Labor were in power they would not stand up to the Gillard government."
Mr McGowan has defended Labor's record and accused the Premier of trying to distract from local concerns.
"I am not going to be sidetracked by federal issues in what is a state campaign," he said.
"The reality is this is a state election and everyone in Western Australia understands that people can vote on state issues on March 9, they can vote on federal issues on September 14."