Nikki Haley makes a major push in her home state of South Carolina. New revelations suggest Boeing could be at fault for a door plug blowout on a 737 MAX plane. And a man on Alabama's death row is set to be executed using nitrogen gas.

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Today's episode of Up First was edited by Megan Pratz, Rusell Lewis, Barrie Hardymon and Olivia Hampton. It was produced by Ziad Buchh, Ben Abrams and Kaity Kline. We get engineering support from Arthur Laurent. And our technical director is Zac Coleman.

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