A Fox News poll released Wednesday showed more than half of registered voters do not believe President TrumpDonald John TrumpVeterans groups demand end to shutdown: 'Get your act together' Brown launches tour in four early nominating states amid 2020 consideration Pence on border wall: Trump won't be ‘deterred’ by Dem ‘obstruction’ 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 BidenJoseph (Joe) Robinette BidenBrown launches tour in four early nominating states amid 2020 consideration 5 takeaways from Barr’s testimony Gillibrand announces exploratory committee to run for president on Colbert MORE and Sen. Bernie SandersBernard (Bernie) SandersBrown launches tour in four early nominating states amid 2020 consideration Gillibrand announces exploratory committee to run for president on Colbert Dem chairman Cummings meets with Trump health chief to discuss drug prices 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 Ann WarrenBrown launches tour in four early nominating states amid 2020 consideration Gillibrand announces exploratory committee to run for president on Colbert Native American group denounces Trump for using Wounded Knee in attack against Warren MORE (D-Mass), Sen. Cory BookerCory Anthony Booker5 takeaways from Barr’s testimony Booker presses Barr on impact of mass incarceration on black Americans Barr: I wouldn't go after businesses relying on Obama-era marijuana policy 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.