Pot, kettle, black.

Via The Hill:

Democratic presidential hopeful Bernie Sanders on Friday called Republican Donald Trump a “nutcase” as he highlighted the need for Democrats to pick a candidate that can beat Trump.

Sanders told supporters in Sheboygan, Wis., that he is the best candidate to face the businessman in a general election.

“What more and more people are understanding is that our campaign would be by far the strongest campaign against Donald Trump,” Sanders said, according to the Washington Post.

He referenced a poll that showed him leading Trump in a hypothetical head-to-head matchup.

“And that’s before he really began to expose what a nutcase he really is,” Sanders added.

Sanders has stepped up his criticism of Trump this week, after the GOP front-runner suggested that women who got illegal abortions should be punished.

“One of the problems you have dealing with Trump, it really is hard to keep up with him,” Sanders said on Friday.

“You know, every day there is some other outrageous, absurd statement. And I’ve chosen not to spend my entire campaign responding to every one of his absurd statements, because that’s all we would, you know, have time to do.”

The Vermont senator has a slight lead over rival Hillary Clinton in Wisconsin. He leads her by about 2 points, according to a RealClearPolitics average of polls, just day’s before the state’s Tuesday primary.