Support for Obamacare is slightly on the rise since December, according to a new CNN/ORC International survey released Tuesday.

The increase is largely due to an jump in support from upper-income Americans.

“Not all of the opposition to the health care law comes from the right,” said CNN Polling Director Keating Holland. “Thirty-nine percent say they oppose the law because it’s too liberal, but 12% say they oppose it because it’s not liberal enough.”

Here’s a closer look at the data, which compiled from 801 Americans through phone interviews:

Via CNN