By NBC News and wire services
Cate Edwards, the oldest child of former presidential candidate John Edwards, will testify at her father's corruption trial. NBC's Lisa Myers reports.
GREENSBORO, N.C. - The eldest daughter of John Edwards is set to take the stand in her father's defense.
Cate Edwards is a 30-year-old lawyer who has sat behind the former presidential contender nearly every day of his corruption trial, now in its fourth week. She's expected to testify Tuesday.
Edwards has pleaded not guilty to six counts related to campaign finance violations over nearly $1 million from two wealthy donors used to help hide the Democrat's pregnant mistress as he sought the White House in 2008.
Cate Edwards fled the courtroom in tears earlier this month during testimony about her mother's reaction to her father's affair with Rielle Hunter. It is not clear what she knows about the cover-up that may help his defense.
Cate, a graduate of Harvard Law, has stood by her father unwaveringly, NBC's Lisa Myers reported on TODAY on Tuesday. In a eulogy to her mother, Elizabeth, in December 2010, Cate said, "One thing remains true and will never change, which is that we're still a family."
John Edwards faces up to 30 years in prison.
Slideshow: John Edwards’ public life
Previous report: Judge rejects testimony on FEC audit in Edwards' trial
The Associated Press contributed to this report.
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