Final negotiations on private hospitals to be located in the grounds of public hospitals are due to take place this week.
The plan to build co-located hospitals was first mooted by Health Minister Mary Harney in a bid to solve the beds crisis.
Final bids for the hospitals have to be lodged by the 30th of March - the Health Service Executive will award the sites on the 16th of April.
Opposition parties are against the scheme, and have said they'll stop the process if they get elected.
However, once the sites have been awarded by the HSE, the programme will be legally binding and irreversible, regardless of who is in government.