Medicare for all—that’s what Bernie Sanders will be fighting for if elected the next U.S. President.

In a speech yesterday, Sanders, the U.S. senator from Vermont and primary opponent to Hillary Clinton, discussed how his universal health coverage fit into his version of socialism.

Polls have indicated that many Democrats don’t think Sanders is a viable candidate due to his long self-identification as a socialist. Sanders sought to compare himself to Franklin D. Roosevelt because, he said, like FDR, he supports broadly based programs designed to raise the educational, health and economic status of all Americans.

His address contrasted his anti-war stance to the more hawkish one of Clinton—although he didn’t mention her by name.

While Sanders did not offer details of how Medicare-for-all would work, he used it as an example of how most developed nations approach health care and education. His point: that opponents and critics have distorted the true meaning of socialism, a concept that lies at the heart of many U.S. programs and policies.