Survey respondents were asked to indicate which of three options for expanding health insurance coverage they would most strongly support: public and private options, providing people younger than 65 years of age the choice of enrolling in a new public health insurance plan (like Medicare) or in private plans; private options only, providing people with tax credits or subsidies, if they have low income, to buy private insurance coverage, without creating a new public plan; or a public option only, eliminating private insurance and covering everyone through a single public plan like Medicare. We also assessed the level of physician support for a proposal that would enable adults between the ages of 55 and 64 years to buy into the current Medicare program a strategy that the Senate Finance Committee has proposed.