Country Labor candidate Dan Hayes spruiked NSW Labor's new hospital data model that showed a 27 per cent increase in emergency department admissions, under the proposed $7 Medicare co-payment plan.

The region's sitting member refuted the claim.

"They will be no co-payment," Mr Maguire said.

Mr Hayes and shadow minister for health Walt Secord said the $7 GP payment cost would be too high for many Australians, who would forgo seeing a general practitioner and instead seek free, hospital services.

"Thousands of people will be forced to turn up in emergency departments because they simply won't be able to afford paying this unfair tax to their local GP," Mr Hayes said.

"NSW hospitals and their staff will be stretched to handle the flood of patients that will result from the $7 GP tax."

NSW Minister for Health, Jillian Skinner slammed Labor's model, reminding people that at this stage, the co-payment does not exist.

"NSW has not prepared any detailed modelling about the potential impact of a co-payment on emergency departments," Ms Skinner said.

"Prior to the Federal Budget, the NSW Ministry of Health did prepare rudimentary scenarios relating to potential impacts of a GP co-payment on emergency departments."

Mr Maguire would not speculate on the co-payment scenario.

He said Wagga Base hospital was being built and developed to suit the needs of Wagga and surrounding areas.

Mr Hayes said Wagga's regional location, and the base hospitals role as a central service for surrounding townships meant the strain felt from a co-payment could be emphasised.

"The regional and rural access to health is a major problem," Mr Hayes.

"There are not as many hospitals or general practitioners."

He emphasised his belief in preventative healthcare, calling it more cost effective in the long term.

Ms Skinner dismissed labor's call saying they were undermining the health system.

"Labor is peddling a hypothetical GP co-payment to alarm the community and to undermine the staff who work so hard in our public hospitals," Ms Skinner said.

"Labor should be ashamed of itself.

"Unfortunately Labor has no shame."

When asked what Labor's state solution to the co-payment would be, Mr Hayes said there would be much to do.

"Labor would fight the Abbott government on implementing this policy every chance it gets," he said.

"It is poor that the current NSW Government refuses to stand up to Tony Abbott."

Federal member for Riverina Michael McCormack described Labor as using "scare mongering tactics".

He said the government had to install a payment to keep Medicare afloat, and legislation would not be released until July 1,2015.

"Health is, and should always be our number one priority."