Comedian Bill MaherWilliam (Bill) MaherKlobuchar takes shots at health and education plans supported by Sanders and Warren Eric Trump: Hypocrisy creates unlevel playing field in politics Maher warns on impeachment: 'Country is going to be paralyzed' for 'a very long time' MORE joked about 2020 candidates criticizing former President Obama at the Democratic presidential debate this week.

"The Democratic candidates went after the president hard. Unfortunately, the president was Obama," he said on "Real Time with Bill Maher," according to a clip posted Friday by Mediaite

"The guy with the 97 percent approval rating among the Democrats," he added. "His shit is not woke enough now."

"Trump saw that. He called Putin. He said, 'I got this one,'" Maher quipped.

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During Wednesday night's debate, Democratic candidates hit former Vice President Joe BidenJoe BidenTrump hits Fox News's Chris Wallace over Ukraine coverage Schiff: Whistleblower testimony might not be necessary Trump warns Democrats will lose House seats over impeachment MORE for Obama administration policies.

New York City Mayor Bill de BlasioBill de Blasio2020 Presidential Candidates Cooperate, or else: New York threatens fines to force people to help block immigration enforcement DNC raises qualifying thresholds for fifth presidential debate MORE (D) asked Biden whether he tried to stop deportations while he served as vice president. 

"I keep my recommendations to him in private," Biden responded during the Detroit debate. 

Sen. Cory BookerCory Anthony BookerRepublicans wrestle with impeachment strategy O'Rourke campaign says path to victory hinges on top 5 finishes in Iowa, Nevada O'Rourke raises .5 million in third quarter MORE (D-N.J.) also told Biden he couldn't pick and choose when he wanted to be associated with Obama. 

“Mr. Vice President, you can’t have it both ways,” Booker said. “You invoke President Obama more than anybody in this campaign. You can’t do it when it’s convenient and then dodge it when it’s not.”

The candidates were among 20 who took the stage at the debate on Tuesday and Wednesday.