[1] She attended Brown University, where she earned a Bachelor of Arts degree in English and American literature.

She began reporting and producing during MTV's first "Choose or Lose" campaign, which covered the 1992 presidential race.

Following the 1996 "Choose or Lose" campaign, Stewart left MTV and moved to CBS News in December 1996.

In 2003, Stewart moved from ABC News to MSNBC, where she was a daytime anchor and primary substitute host for Countdown with Keith Olbermann and The Rachel Maddow Show.

Stewart joined NPR in May 2007 to host (along with Luke Burbank) a multi-platform morning drive show, The Bryant Park Project, which targeted an online audience, younger listeners and adults ages 25 to 44.

"[8][9] In late 2011, Stewart returned to CBS News to report a story on cheating on standardized college admissions tests for 60 Minutes that aired on January 1, 2012.

[13] Stewart returned to PBS as a special correspondent in 2016 and served as a fill-in anchor for NewsHour Weekend and Charlie Rose.