She covered Hillary Rodham Clinton's presidential campaign, and was one
of ABC's reporters in Haiti after the earthquake.
Snow was a contender for the newsreader job on weekday "Good Morning America," but that role went to Juju Chang. ABC said Chang and Elizabeth Vargas will fill in for Snow this weekend.
NBC News President Steve Capus called it "a great day for NBC News," and said Snow's hiring showed the network's commitment to growing its prime-time newsmagazine and investing in the future.
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NBC is owned by General Electric Co. ABC is owned by The Walt Disney Co.
