In spite of his recent flubs and rocky debate performances, Joe Biden has maintained a double-digit lead over fellow Democratic presidential hopefuls Sens. Elizabeth Warren and Bernie Sanders in South Carolina, a poll released Wednesday shows.

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​The former vice president ​has 36 percent support in the Palmetto State, topping Warren’s 17 percent and Sanders’ 16 percent, the ​Post and Courier-Change Research Poll found.

Biden has led all five of the polls taken since February by an average of 22 percentage points.

Rounding out the remainder of the field are Sen. Kamala Harris at 12 percent, Mayor Pete Buttigieg at 5 percent, Sen. Cory Booker with 4 percent and Rep. Tulsi Gabbard with 2 percent.

All of the others poll at 1 percent or less.

Biden leads all age groups except for voters 18-34, who back Sanders by 30 percent and Warren at 26 percent.

But Biden has a 39 percentage-point lead among voters 65 and older.

Among black voters, Biden leads with 45 percent of their support, followed by Sanders and Harris, who are tied at 15 percent.

But among white voters, Warren is ahead with 26 percent, while Biden comes in second place with 24 percent and Sanders at 16 percent.

Biden has struggled in the first two debates after taking hits on his health care plan and his past statements on busing.

In recent weeks, he said he was vice president during the 2018 mass shooting at a Parkland, Fla., school and told an audience that “poor kids are just as bright and just as talented as white kids.”

The poll surveyed 1,209 registered voters in South Carolina between Aug. 9 and 12. It has a plus/minus 2.8 percentage-point margin of error.