Last year the Rudd Government committed $560 million from the Health and Hospitals Fund to establish a network of about 10 best-practice regional cancer centres.

Ballarat's proposal was submitted on Friday and was developed by Ballarat Health Services, St John of God Hospital and Austin Health, in conjunction with the Victorian Government.

If successful, the centre would be at the Base Hospital and would include four radiotherapy bunkers and room to expand, if necessary.

"We have put in an extremely strong application but this is a competitive process," Ms King said.

"Organisations across Australia are competing for funding.

"It would certainly help us send a loud and very strong message if members of the community actively voiced their support for this important facility."

Ms King has encouraged people to write to her office and directly to the Minister for Health and Ageing, Nicola Roxon, to support the bid.

The proposal has the support of the local hospitals.

"Our plan is to provide for the cancer treatment needs for this city, and the region, well into the future," BHS chief executive officer Andrew Rowe said.

"We have all been working on this for nearly two years," St John of God Hospital chief executive officer John Fogarty agreed.

"The goal was to create a well-thought-out and detailed solution to the challenge of caring for cancer patients long-term."

You can send your message of support to Catherine.King.MP@aph.gov.au or to Minister Roxon on Nicola.Roxon.MP@aph.gov.au

Lett ers can also be sent to Ms King's electorate office at 5 Lydiard St Nth, Ballarat, 3350.