Top Sanders campaign aide hits Biden, saying no one should be able to ride on Obama's coattails

A top 2020 campaign official for Sen. Bernie SandersBernie SandersEx-Obama official on Sanders-Warren feud: 'I don't think it played out well for either of them' Former Vermont Governor: Sanders 'will play dirty' Hill.TV's Krystal Ball rips Warren over feud with Sanders MORE (I-Vt.) criticized fellow White House hopeful Joe BidenJoe BidenLev Parnas implicates Rick Perry, says Giuliani had him pressure Ukraine to announce Biden probe Ex-Obama official on Sanders-Warren feud: 'I don't think it played out well for either of them' Parnas says he doesn't think that Joe Biden did anything wrong regarding Ukraine MORE on Thursday, accusing the former vice president of largely riding on former President Obama’s legacy, particularly when it comes to the support of African-American voters.

“No one should be able to ride the coattails of the first African-American president,” Nina Turner, co-chairwoman of Sanders's presidential campaign, said  on Hill.TV, referring to Biden.

“You need to earn the black vote every single time that you run,” she added.

The Biden campaign didn't immediately respond to Hill.TV's request for comment.

Black voters are considered a crucial Democratic voting bloc, particularly in states like South Carolina where they make up a significant proportion of the electorate.

Biden maintains a strong lead in South Carolina, at 35 percent support in the RealClearPolitics average. He's followed by Sen. Elizabeth WarrenElizabeth Ann WarrenEx-Obama official on Sanders-Warren feud: 'I don't think it played out well for either of them' Former Vermont Governor: Sanders 'will play dirty' Hill.TV's Krystal Ball rips Warren over feud with Sanders MORE (D-Mass.) at 16.3 percent and Sanders at 12.8 percent. South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegFormer insurance executive: 'Medicare for all' would eliminate jobs that are 'not needed' Buttigieg says he's proud to be a part of US system amid UK royal family drama Buttigieg asked about 'Mayo Pete' memes by New York Times ed board MORE (D) is in fourth place at 6.5 percent.

Turner on Thursday attributed Biden’s strong support within the African-American community, particularly among older black voters to “short memories,” and “not a true understanding of the history,” alluding to Biden’s criminal justice record.

“In the African-American community, especially among older voters, is a reverence for President Barack ObamaBarack Hussein ObamaNew Hampshire Rep. Kuster endorses Buttigieg Overnight Defense: Foreign policy takes center stage at Democratic debate | House delivers impeachment articles to Senate | Dems vow to force new vote on Trump's border wall Ray LaHood backs Biden for president MORE and this whole notion that if Vice President Biden was good enough for President Obama, he should be good enough for us,” she said.

Turner also lamented that black voters are often overlooked unless it’s a presidential election cycle, calling it a “wake up call” for the community as a whole, but maintained that Sanders is "not taking anything for granted." 

"We are out there knocking [on] doors, making the phone calls, the senator himself has come to that state," she told Hill.TV, citing Sanders's recent trip to South Carolina over the weekend. 

—Tess Bonn