GREENSBORO, North Carolina (CNN) -- Two-time Democratic presidential hopeful John Edwards took responsibility for "my sins," including an affair that resulted in a "precious" daughter, after his federal corruption case ended in an acquittal and mistrial Thursday.
Prosecutors had accused the onetime North Carolina senator of using nearly $1 million in illegal campaign contributions to keep his pregnant mistress under wraps as he ran for president in 2008. But after more than 50 hours of deliberations over nine days, jurors cleared him of one of six counts and deadlocked on the rest.
Emerging from the courthouse with his parents and daughter Cate at his side, he said that while he never believed he committed a crime, "I did an awful, awful lot that was wrong, and there is no one else responsible for my sins."
"None of the people who came to court and testified are responsible. Nobody working for the government is responsible," he said. "I am responsible, and if I want to find the person who should be held accountable for my sins, honestly, I don't have to go any further than the mirror."
He thanked his family for supporting him, adding that "I'm grateful for all my children" -- including Cate, who sat through the trial with him, 12-year-old Jack, 14-year-old Emma and the 4-year-old girl from his affair, whom he called "my precious Quinn, who I love more than any of you can ever imagine."
Edwards had denied that he was the girl's father for more than a year, saying the affair was over before his onetime mistress, Rielle Hunter, became pregnant.
Jurors emerged Thursday afternoon to announce they had reached a decision on the one count, but none of the others. U.S. District Judge Catherine Eagles ordered them back into the jury room to continue deliberating, but declared a mistrial after they returned less than an hour later to announce the deadlock.
The result leaves prosecutors to decide whether to re-try Edwards. There was no immediate comment from the Justice Department, which prosecuted the case.
Edwards had been charged with four counts of accepting illegal campaign contributions, one count of falsifying documents and one of conspiring to receive and conceal the contributions. The charges could have carried a maximum sentence of 30 years in prison and a $1.5 million fine.
"This was a win for John Edwards, and there will be a lot of questions about why this case was brought," CNN legal analyst Jeffrey Toobin said after the announcement.
Edwards ran for president in 2004, when he ended up as the Democrats' nominee for vice president, and again in 2008. His attorneys argued he was guilty of being a bad husband to his wife, Elizabeth, who died in 2010, but had committed no crime.
They also argued that former Edwards aide Andrew Young, the government's star witness, used the contributions for his own gain and to pay for Hunter's medical expenses to hide the affair from Edwards' wife.
Neither Edwards, Hunter nor either of the two donors whose funds were in question testified during the trial. Fred Baron died in 2008, while Rachel "Bunny" Mellon -- who gave Edwards the bulk of the money -- is now 101. Jurors last week asked to review all the exhibits, indicating they were in it for the long haul.
Prosecutors said Edwards "knowingly and willingly" took the money from Baron and Mellon to keep Hunter out of the public eye, then concealed the donations by filing false and misleading campaign disclosure reports.
The affair occurred as Edwards was gearing up for a second White House bid in 2008, and he knew his political ambitions depended on keeping his affair with Hunter a secret, Assistant U.S. Attorney Robert Higdon told jurors in closing arguments.
"There is no question it would destroy the campaign of John Edwards," Higdon said.
Prosecutors argued that Edwards knowingly violated campaign finance laws by accepting the large contributions from Mellon and Baron that went to support Hunter. Edwards "knew these rules well," Higdon said, and should have known that the contributions violated campaign finance laws.
Edwards accepted $725,000 from Mellon and more than $200,000 from Baron, prosecutors said. The money was used to pay for Hunter's living and medical expenses, travel and other costs to keep her out of sight while Edwards made his White House run, prosecutors say.
Defense attorneys argued the donations could not be considered campaign contributions.
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