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The unexpected joy at a Trump rally in Iowa
By Ryan Lizza
Is Bernie Sanders’s socialism a liability in the general election?
By Matthew Yglesias
How Does The Iowa Caucus Work?
By Domenico Montanaro
Trump wants to run against Bernie over socialism.
By William Saletan
How the Iowa caucuses work - explained with cats
By Ben Kellerman
How Joe Biden could beat Donald Trump
By Laura McGann