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How do the Iowa caucuses work?
By Carrie Dann & Mark Murray
'How do you fall for the Bernie Sanders scam?' Martin O'Malley on the Democrats and Iowa
By Martin Pengelly
The Iowa caucus: Will caucuses predict the 2020 Democratic presidential nominee? For 7 of the past 9 contested elections it did
By Caitlin O'Kane
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Pork Plant Workers Turn Out for Sanders in First Iowa Caucus
By Ryan Grim & Akela Lacy
On the Eve of the Iowa Caucuses, Bernie Sanders Emerges as the Democratic Front-Runner
By Benjamin Wallace-Wells
Iowa caucuses: The latest coverage, buzz and more
By Sarah Kay & Danny Lawhon
Iowa caucuses fail to declare Democratic winner after major snafu with reporting results
By Kendall Karson & Meg Cunningham
Iowa caucuses 2020: Results, vote counts show Sanders, Buttigieg tie
By Grace Panetta & Walt Hickey
John Kerry overheard discussing possible 2020 bid amid concern of 'Sanders taking down the Democratic Party'
By Allan Smith & Jonathan Allen
How do the Iowa caucuses work? A primer for the 2020 election
By Musadiq Bidar & Adam Brewster