Biden, Gabbard suffer hits to favorability after debate

Democratic presidential hopefuls Joe BidenJoe BidenOmar fires back at Trump over rally remarks: 'This is my country' Trump mocks Biden appearance, mask use ahead of first debate Trump attacks Omar for criticizing US: 'How did you do where you came from?' MORE and Rep. Tulsi GabbardTulsi GabbardRepublicans call on DOJ to investigate Netflix over 'Cuties' film Hispanic Caucus campaign arm endorses slate of non-Hispanic candidates Gabbard says she 'was not invited to participate in any way' in Democratic convention MORE (D-Hawaii) saw their net favorability among Democratic primary voters take a dip following the most recent Democratic debate and amid Gabbard's high-profile feud with 2016 presidential candidate Hillary ClintonHillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE, a new poll has found. 

The results of a Morning Consult survey dated Monday show the net favorability of Biden, the former vice president, slipped 5 percentage points, from 55 percent to 50 percent, and Gabbard's dropped 6 percentage points from 10 percent to 4 percent following the fourth Democratic debate last week in Westerville, Ohio.

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The net favorability of many other candidates remained relatively stable, as Sen. Elizabeth WarrenElizabeth WarrenHarris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda Judd Gregg: The Kamala threat — the Californiaization of America GOP set to release controversial Biden report MORE (D-Mass.) saw a 1 percentage point increase, Sen. Bernie SandersBernie SandersButtigieg stands in as Pence for Harris's debate practice Bernie Sanders warns of 'nightmare scenario' if Trump refuses election results Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (I-Vt.) saw no change and Sen. Kamala HarrisKamala HarrisButtigieg stands in as Pence for Harris's debate practice First presidential debate to cover coronavirus, Supreme Court Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (D-Calif.) saw a 1 percentage point drop. 

South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegButtigieg stands in as Pence for Harris's debate practice Hillicon Valley: FBI, DHS warn that foreign hackers will likely spread disinformation around election results | Social media platforms put muscle into National Voter Registration Day | Trump to meet with Republican state officials on tech liability shield Facebook takes down Chinese network targeting Philippines, Southeast Asia and the US MORE saw the largest net favorability increase, from 33 percent to 36 percent. 

Net favorability is calculated by subtracting the percentage of Democratic primary voters who view the candidates unfavorably from those who view them favorably. 

The survey still showed Biden leading the Democratic field, with support from 30 percent of Democratic primary voters polled. He was followed by  Warren who was supported by 21 percent and Sanders who was supported by 18 percent. 

Twelve Democratic hopefuls faced off in the debate.

Gabbard has recently been sparring with Clinton after the former secretary of State suggested, seemingly without evidence, that the lawmaker was a Russian asset. Gabbard has denied this and has slammed Clinton as the "queen of warmongers."

Morning Consult surveyed 11,521 registered voters who said they may vote in the Democratic primary or caucus between Oct. 16-20. The margin of error is plus or minus 1 percentage point.