I'm not sure that's true. The GOP platform does not mention universal healthcare or anything like it, that's simply not a top priority. The healthcare-related planks are:
- Restoring Patient Control and Preserving Quality in Healthcare
- Protecting Individual Conscience in Healthcare
- Better Care and Lower Costs: Tort Reform
- Advancing Research and Development in Healthcare
- Putting Patients First: Reforming the FDA
Freedom of choice, high quality, affordability, and limited regulations are the goals. I don't think they're against universal coverage, but as a party it is not a main focus.
The Democratic platform healthcare section begins with "Securing Universal Health Care:
Democrats believe that health care is a right, not a privilege". Their priorities are:
- Securing Universal Health Care
- Supporting Community Health Centers
- Reducing Prescription Drug Costs
- Enabling Cutting-Edge Medical Research
- Combating Drug and Alcohol Addiction
- Treating Mental Health
- Supporting Those Living with Autism and their Families
- Securing Reproductive Health, Rights, and Justice
- Ensuring Long-Term Care, Services, and Supports
- Protecting and Promoting Public Health
- Ending Violence Against Women
- Preventing Gun Violence
The main goals are universal coverage, public funding, affordability, opposing discrimination, and a couple specific areas of focus. Some of this overlaps with the Republican platform, but this is clearly a very different set of goals, and I think universal care is the most significant difference.