Two New York Democrats who have expressed presidential ambitions face underwater approval ratings in their home state, according to a new poll.

In a Quinnipiac University Poll survey released Thursday, Sen. Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.) was supported by just 29 percent of registered voters in her state. Her unfavorable rating is slightly higher: 35 percent of New Yorkers surveyed said they disapproved of the job being done by their state's junior senator.

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As for New York City Mayor Bill de Blasio (D), who has not announced a bid but has been hinting about a 2020 campaign for weeks, just 24 percent of New Yorkers polled approved of the job he has done as mayor. 49 percent of voters surveyed said they disapproved of the mayor's performance.

The numbers are some of the lowest popularity ratings either Democrat has ever faced, even as they consider broadening their exposure to the larger electorate.

"It's no surprise in blue New York that Democrats are eager to send President Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE packing in 2020," said polling analyst Mary Snow in a press release.

"But New Yorkers aren't cutting any slack to their own elected officials looking to replace him. As Sen. Kirsten Gillibrand makes her presidential bid official, her net favorability score is her worst ever," Snow continued. "For New York City Mayor Bill de Blasio, who hasn't yet decided whether he'll run, his statewide net favorability rating is at an all-time low since taking office in 2014."

Former Vice President Joe Biden Joe 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 had the highest favorability rating in the poll, at 62 percent (compared to 24 percent of respondents who have an unfavorable view of Biden). Sen. Bernie Sanders Bernie 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.) also remains above water in the poll, with 51 percent of New York voters surveyed sharing a positive view of the senator.

Quinnipiac University Poll contacted 1,216 voters in New York state for the survey, which has a margin of error of 3.8 percentage points.