Hillary Clinton didn’t fare much better than Debbie Wasserman Schultz when MSNBC host Chris Matthews asked her a seemingly simple question: “What’s the difference between a socialist and a Democrat?”

On Matthews’ show Tuesday, Clinton stuttered and stammered and ultimately avoided answering the question.

Prefacing the question by stating Donald Trump is on the right and Bernie Sanders is on the left in the presidential race, Matthews theorized Clinton is somewhere left of center.

Calling Clinton a “pretty typical Democrat in a traditionally Democratic Party,” Matthews asked, “What’s the difference between a socialist and a Democrat?”

“Well, you’d have to ask — you’d have to …” she began, grasping for an answer.

“Would you like somebody to call you a socialist?” he asked. “I wouldn’t like somebody calling me a socialist.”

“But I’m not one,” she said.

“So what’s the difference between a socialist and a Democrat?” he asked again.

“Well, I can tell you what I am,” she said. “I am a progressive Democrat. I am a progressive Democrat who likes to get things done. And who believes that we are better off in this country when we’re trying to solve problems together — getting people to work together. There will always be strong feelings and I respect that, from, you know, the far right, the far left.”

Matthews noted, “Debbie Wasserman Schultz wouldn’t answer the question either.”

In July, Matthews took a run at the chair of the Democratic National Committee and was similarly rebuffed.

Real Clear Politics reported:

“What is the difference between a Democrat and a socialist?” Matthews asked, leaving Wasserman Schultz at a loss for words.

“I used to think there is a big difference. What do you think it is?” Matthews tried again. “A Democrat like Hillary and a socialist like Bernie Sanders.”

Wasserman Schultz again was unable to answer and instead tried to tell Matthews what the difference between a Democrat and a Republican is.

“The more important question is what is the difference between being a Democrat and being a Republican,” she said.

“What’s the big difference between a Democrat and a socialist?” Matthews again asked.

“You’re chairman of the democratic party. Tell me the difference between you and a socialist,” Matthews reminded her.

“The relevant debate that we’ll be having this campaign is what’s the difference between a Democrat and a Republican,” Schultz said.

Why is it so difficult to explain? Maybe because there is no difference?