Obama's sister describes his 'easy going' demeanor

(CNN) - President Barack Obama's sister acknowledged his first term has been a "challenging time," but said it's important he win a second term.

"He has a healthy dose of pragmatism and he knew there would be enormous challenges and that it would be hard work, but of course there are things that happened that are simply unforeseen," Maya Soetoro-Ng told CNN's Piers Morgan in an interview set to air Tuesday. "As a citizen and as a parent myself, it's very important to me that he run and win."

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