Sanders, Biden in statistical dead heat in Iowa: poll | The Hill
Sanders Seizes Lead in Volatile Iowa Race, Times Poll Finds - The New York Times
CBS poll: Biden, Trump tied for Iowa voters while Greenfield leads in Senate race
Iowa Poll: Biden and Sanders Top List of Favored 2020 Democrats
Iowa Poll: Donald Trump, Joe Biden are tied in Iowa in presidential race
Iowa poll: Biden stretches lead over Sanders - POLITICO
Joe Biden's lead slips as Elizabeth Warren surges, Iowa poll shows | Joe Biden | The Guardian
Biden Leads, But Warren and Buttigieg Gain Ground in New Iowa Poll – Rolling Stone
New poll: Biden, Sanders running neck-and-neck in Iowa - POLITICO
Iowa poll: Biden leads, followed by Sanders, Warren, Buttigieg
New Iowa poll: Biden lead shrinks as Warren, Buttigieg climb
Biden and Sanders Lead the 2020 Field in Iowa, Poll Finds - The New York Times
New Iowa Poll shows President Trump narrowing leading Biden in Iowa | KGAN
Stability pushes Sanders to top of ISU/Civiqs poll; caucus interest building • News Service • Iowa State University
Trump leads Biden by 8 in Iowa: poll | The Hill
Poll showing Trump and Biden tied in Iowa reveals gender split
Bernie Sanders Leads Iowa Polls 2 Days Before Iowa Caucuses | MSNBC - YouTube
Biden Extends Lead Over Trump in New Nexstar Iowa 2020 RABA Research Poll | who13.com
Iowa poll: Biden, Bernie lead Democratic caucus field - POLITICO
A Month Ahead of Iowa Caucuses, Biden Is Democrats' Best Bet to Beat Trump
Iowa poll shows a tight four-way race in final weeks before the Democratic caucuses | CNN Politics
New Iowa Poll Shows Tight Race, With Joe Biden Jumping Ahead - The New York Times
Joe Biden's approval rating falls to a new low, Iowa Poll shows
Democrats Make Pitch in Iowa as Warren Overtakes Biden in Poll - WSJ
Election Update: Two New Polls Show Biden's Upside Scenario | FiveThirtyEight
Iowa Poll: Trump takes lead from Biden days before Nov. 3 election
Iowa Poll: Joe Biden's approval dips before likely 2024 reelection run
Warren Leads Tight Iowa Race as Biden Fades, Poll Finds - The New York Times
Iowa Poll: Joe Biden's approval dips before likely 2024 reelection run
Iowa Poll: Joe Biden, Bernie Sanders stand out among likely caucusgoers | CNN Politics
