Former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE edged Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.) by a margin of just 10 votes, according to results from the Iowa State Fair Straw Poll.

The poll, which is unscientific and "intended for entertainment purposes only," found that 17.7 percent of voters said they support the former vice president, while 17.2 said they support the progressive Massachusetts senator.

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South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE (D) came in third place, scoring 14 percent of the vote, while Sen. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.) came in fourth place with 10 percent of the vote.

The poll was conducted via iPads with more than 4,000 fairgoers who recently attended the Iowa State Fair that ran from Aug. 8 to 18. Though unscientific, the office of the Iowa Secretary of State, which released the poll, said it has previously been "a pretty good indicator" of the caucus results.

Iowa is due to hold its caucus Feb. 3, kicking off the 2020 nomination race.

The Iowa State Fair is often seen as a test for candidates' abilities to perform well in retail politicking.

Voters flocked to see Warren at the fair earlier this month where she drew larger and more enthusiastic crowds than Biden did at the Des Moines Register's Soapbox stage during his weekday visit.

Warren has gained traction in the polls recently, often landing in second or third place.

However, Biden expanded his lead among his Democratic opponents garnering 29 percent of support from voters, according to a new CNN poll released Tuesday.

The same poll showed Sanders and Warren respectively at 14 and 15 percent support.