Final answer:
More information is needed to determine the minimum number of immigrants needed to keep Medisure solvent.
Step-by-step explanation:
The question is asking for the minimum number of immigrants needed each year to keep Medisure solvent through the next election at the end of 2027. To answer this question, we need more information on how immigrants contribute to Medisure's solvency.
The provided information discusses health insurance programs, such as Medicaid and Medicare, but does not specify how immigrants impact them. Without more information, it is not possible to provide a precise numerical answer.