Thank you for the opportunity to help you with your question!
One of the major significant issue in the democratic party is government control and outsourcing of health care from the central government. By this, the democrats believe that the government should take care of all its people's health care. A universal health care service delivery available to the general public is one of the key issue democrats fight for.
On the other hand , the republicans oppose universal health care in fear of quality destruction of private health care.
Please let me know if you need any clarification. I'm always happy to answer your questions.