Poll: Six in 10 voters approve of Hillary Clinton's endorsement of Joe Biden

According to a new Hill-HarrisX poll, 60 percent of voters approve of Hillary ClintonHillary Diane Rodham ClintonHouse Judiciary Republicans mockingly tweet 'Happy Birthday' to Hillary Clinton after Barrett confirmation Hillary Clinton tweets 'vote them out' after Senate GOP confirm Barrett CNN: Kayleigh McEnany praised Biden as 'man of the people' in 2015 MORE's endorsement of presumptive Democratic nominee Joe BidenJoe BidenDemocrats warn GOP will regret Barrett confirmation Trump campaign eyes election night party at his sold-out DC hotel Harris blasts GOP for confirming Amy Coney Barrett: 'We won't forget this' MORE, while 40 percent disapprove.

Approval among Democrats was high in the May 6 survey, at 88 percent.

Support among independents was split with 52 percent approval, and just 37 percent of Republicans approved.

When comparing endorsement approval to former White House rival Sen. Bernie SandersBernie SandersObama book excerpt: 'Hard to deny my overconfidence' during early health care discussions Americans have a choice: Socialized medicine or health care freedom Ocasio-Cortez says Democrats must focus on winning White House for Biden MORE (I-Vt.), the poll found that party approval remains about the same at 87 percent, but support among independent voters and Republicans was slightly higher.

Fifty-nine percent of independent voters supported Sanders's endorsement of Biden in a April 19-20 survey, while 42 percent of Republican voters agreed.

"The public is somewhat split on Hillary Clinton's decision to endorse Joe Biden for president, with slightly more people approv[ing], 60 percent, than disapproving, 40 percent," Chris Jackson, Vice President of Ipsos, told Hill.TV.

"Independents are split, 52-48, which suggests this is not something that broadens the Democratic coalition — this is very much something that's going to be really about bringing the existing Democratic Party together," he added.

The Hill-HarrisX poll was conducted online among 957 registered voters on May 6. It has a margin of error of plus or minus 3.17 percentage points. 

— Gabriela Schulte