CNN announced late Monday it will host two separate town halls in Iowa for 2020 presidential candidates 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 and Tom Steyer Tom SteyerTV ads favored Biden 2-1 in past month Inslee calls Biden climate plan 'perfect for the moment' OVERNIGHT ENERGY: Trump administration finalizes plan to open up Alaska wildlife refuge to drilling | California finalizes fuel efficiency deal with five automakers, undercutting Trump | Democrats use vulnerable GOP senators to get rare win on environment MORE.

Biden is currently one of the front-runners in the crowded Democratic field, leading in the RealClearPolitics average nationally, but he sits in third place in the Iowa polling average, trailing 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.) and 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. He will take the stage next Monday night with CNN "Outfront" anchor Erin Burnett serving as moderator.

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Biden's campaign unveiled a $4 million ad buy in The Hawkeye State just last week. The ad is airing on digital and television platforms and focuses on Biden's work to help the middle class.

One night earlier, billionaire businessman Tom Steyer will appear with CNN anchor Brianna Keilar serving as moderator. Steyer currently sits at 0.9 percent in the RealClearPolitics index nationally and 2.7 percent in Iowa after entering the race in July, later than the other contenders.

Steyer has spent more money on campaign advertisements than any other presidential candidate, including President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE, pumping more than $30 million into TV and radio ads by the end of October.

Both town halls will take place at Grinnell College.

The town halls come with the Iowa caucuses less than 100 days away.