Sen. Dianne Feinstein (D., Calif.) said that she was "not there" on single-payer health care at a town hall on Monday.

The San Francisco town hall booed Feinstein when she said that she doesn't currently support the socialized system that is strongly supported by former Democratic presidential primary candidate Sen. Bernie Sanders (I., Vt.).

A man at the town hall mentioned that Sanders introduced legislation for a single-payer health care system, and asked Feinstein for her position.

"If single-payer health care is going to mean the complete takeover by the government of all health care, I am not there," Feinstein said.

Feinstein's response drew loud boos from the audience, with some in the audience holding up signs that read, "Retire Feinstein."

While many in the crowd let Feinstein continue speaking, a few hecklers interrupted her while shouting their demand for single-payer health care with cry of, "single-payer now, you're a sellout!"

Feinstein said health care and climate change were the two biggest issues facing America.

After Feinstein finished her answer, the hecklers grew louder, chanting, "Single-payer now!"