Several recent polls have found that a majority of Americans support a policy called ‘Medicare for all,’ but a new survey pinpoints what Americans think that policy means.

A poll released Wednesday from Survey Monkey and Axios asked voters what they think candidates mean when they say ‘Medicare for all,’ and what they want the policy to mean if they support it.

Liberal Democrats have touted their support for ‘Medicare for all’ on the campaign trail ahead of the midterm elections but there is disagreement among the Democratic Party on what that term means. Some Democrats pushing for a Medicare buy-in program and others want to extend Medicare to everyone.

The poll found that 52 percent of voters surveyed think that ‘Medicare for all’ refers to a single-payer, government-run system where Medicare covers everyone in America. The plan would likely resemble the one sponsored by Sen. Bernie Sanders, I-Vt., the poll said.

But voters are far more divided over whether they actually want single payer, as 34 percent said they would prefer a single payer system. Another 33 percent would prefer an optional public plan alongside private insurance, which would resemble the “public option” that was considered for Obamacare but was eventually scuttled.

The survey found 30 percent wanted neither of those options.

“Democrats were far more open to a single-payer system than Republicans and independents,” Axios said. The poll surveyed 2,949 adults in the U.S. and has a margin of error of 2.5 percentage points.