A Fox News poll released Wednesday showed more than half of registered voters do not believe President TrumpDonald TrumpWhat blue wave? A close look at Texas today tells of a different story Democrats go down to the wire with Manchin Trump's former bodyguard investigated in NY prosectors' probe: report MORE will be reelected in 2020.

The poll found that 52 percent of those surveyed do not think Trump will win reelection, compared to 39 percent of registered voters surveyed who believe he will secure a second term. 

Asked who they would vote for if the election were held today, 38 percent of voters said they would support Trump, while 55 percent said they would vote for someone else.

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Thirty percent of respondents said they would “definitely” vote to reelect Trump, compared to 47 percent who indicated they would “definitely” vote for someone else, the poll found. 

A Fox News poll published in December 2010 showed 29 percent of voters thought then-President Obama would be reelected. Obama won a second term in 2012.

Wednesday's poll asked registered Democrats for their opinions on a host of potential 2020 Democratic presidential candidates. Respondents gave the highest marks to former Vice President Joe BidenJoe BidenMilitary must better understand sexual assaults to combat them The Hill's Equilibrium — Presented by NextEra Energy — Tasmanian devil wipes out penguin population On The Money: Democrats make full-court press on expanded child tax credit | White House confident Congress will raise debt ceiling MORE and Sen. Bernie SandersBernie SandersThe Hill's Equilibrium — Presented by NextEra Energy — Tasmanian devil wipes out penguin population Overnight Health Care: Medicaid enrollment reaches new high | White House gives allocation plan for 55M doses | Schumer backs dental, vision, hearing in Medicare Schumer backing plan to add dental, vision and hearing coverage to Medicare MORE (I-Vt.), the poll found.

The poll surveyed 1,006 registered voters from Dec. 9-11, and has a margin of error of 3 percentage points.

Trump filed paperwork to run for reelection the day he was inaugurated in January 2017. At a press conference last month, Trump asked Vice President Pence to be his running mate in 2020 in an impromptu exchange prompted by a reporter's question.

The president has in recent months attacked a host of potential Democratic challengers in 2020, chastising Biden, Sanders, Sen. Elizabeth WarrenElizabeth WarrenBiden risks break with progressives on infrastructure The Memo: The center strikes back Centrists gain foothold in infrastructure talks; cyber attacks at center of Biden-Putin meeting MORE (D-Mass), Sen. Cory BookerCory BookerThis week: Senate set for voting rights fight Congress must act to correct flaws in the First Step Act Democrats introduce resolution apologizing to LGBT community for government discrimination MORE (D-N.J.) and others on social media and during midterm campaign rallies.

Each of those people is said to be considering a presidential bid, but has not formally announced whether they will run.