John Edwards' daughter, Cate Edwards, is expected to testify Tuesday in the former U.S. senator and presidential candidate's ongoing corruption trial.
Cate Edwards would be the first family member to do so.
The indicted politician's daughter, 30, broke down in tears and had to leave the courtroom earlier this month amid revelations of Edwards' misdeeds.
Her mother, Elizabeth, passed away in December 2010.
The defense began laying out its case Monday, shifting the focus from Edwards' affair with Rielle Hunter to the specifics of campaign finance law.
Judge Catherine Eagles threw out most of the proposed testimony from former Federal Election Commission Chairman Scott Thomas after prosecutors objected, arguing his opinions and past FEC rulings are irrelevant to the case.
Eagles sent the jury home as Thomas previewed his testimony, saying the use of nearly $1 million to cover up Edwards' affair with Hunter wasn't illegal.
Thomas said in his opinion, "This is a clear-cut case that the payments were not campaign contributions," and thus, did not have to be reported as such.
The "payments did not constitute a violation of the law," he said.
But the judge ruled that information would be inadmissible. Edwards attorney, Abbe Lowe, protested, telling her he thought her decision might constitute a "reversible error" that potentially could be overturned on appeal.
Eagles retorted, "That sounds like you are arguing with me."
Earlier Monday, the jury did hear from Lora Haggard, the chief finance officer for Edwards' 2008 campaign for the Democratic presidential nomination.
From the stand, she said she never thought the money from wealthy donors Bunny Mellon and Fred Baron ever had to be reported to the FEC.
She said of the money that has him facing jail time, "They were not contributions to the campaign to urge the public to vote for Mr. Edwards."
Prosecutors say it absolutely was, as Elizabeth knew he was having an affair with Rielle Hunter and the funds were to conceal the affair from the public, thus protecting his image in the midst of a serious White House run.
It's still unclear whether Edwards himself will testify, but Cate has been by his side daily, and she could take the stand as early as today.