Buttigieg has narrow Iowa lead with 62% reporting; Sanders speaking after first Iowa results show him in 2nd; Sanders official: "We'll be in first when it's all counted"

Partial Iowa results show Buttigieg, Sanders leading; First Iowa results: Buttigieg has narrow lead; Biden in 4th; Biden Donor: "Disappointing" to see Biden in 4th place in Iowa; First Iowa results: Biden trails Buttigieg by 10 points; Bloomberg to double ad spending after Iowa caucus chaos; Bloomberg to double ad spending after Iowa caucus chaos; Biden speaks for first time since Iowa results released

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