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The unexpected joy at a Trump rally in Iowa
By Ryan Lizza
Sanders surges, Biden plateaus in latest NBC/WSJ poll of 2020 Democratic primary voters
By Jacob Pramuk
Election Update: A New Batch Of Iowa Polls Still Shows A Tight Race Between Sanders And Biden
By Geoffrey Skelley
Trump wants to run against Bernie over socialism.
By William Saletan
How the Iowa caucuses work - explained with cats
By Ben Kellerman
Super PAC uses heart attack in ad hitting Bernie Sanders
By Alex Thompson & Maggie Severns
Sanders gets the frontrunner treatment - POLITICO
By Holly Otterbein
How Does The Iowa Caucus Work?
By Domenico Montanaro
Bernie Sanders's Surge Owes a Lot to Voters of Color (Published 2020)
By Giovanni Russonello
How Will the Winner of the Iowa Caucuses Be Chosen? Here's What You Should Know (Published 2020)
By Maggie Astor & Matt Stevens
How Joe Biden could beat Donald Trump
By Laura McGann