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 leads President 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 by 10 points in a hypothetical 2020 general election matchup, according to a new poll.

The Emerson College poll released Tuesday shows Biden with the support of 55 percent of voters and Trump with 45 percent.

Biden, who has not announced his candidacy for president but is expected to soon jump into the race, has the largest lead over Trump among likely and declared Democratic candidates.

But Biden's lead over Trump shrinks to 8 points when former Starbucks CEO Howard Schultz is included as an option, according to the poll.

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The poll also shows Sen. Kamala Harris Kamala 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.) defeating Trump by 4 percentage points, while Sens. Elizabeth Warren Elizabeth 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.) and 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.) each edge Trump by 2 points.

The poll also finds that Trump narrowly leads former Rep. Beto O'Rourke Beto O'RourkeJimmy Carter says his son smoked pot with Willie Nelson on White House roof O'Rourke endorses Kennedy for Senate: 'A champion for the values we're most proud of' 2020 Democrats do convention Zoom call MORE (D-Texas), with Trump garnering 51 percent of support and O'Rourke getting 49 percent of supporters.

The poll's results are based on interviews of 1,153 registered voters from March 17 to March 18. The poll has a margin of error of 2.8 percentage points.