Johannesburg - Forensic investigator Paul O'Sullivan voted for the ANC hours after quitting AgangSA, the Citizen reported on Tuesday.
He resigned from AgangSA on May 7, the day of the general elections, after having made it as one of the party's parliamentary candidates.
“The eight weeks I spent at Agang were enough to realise that politics is a dirty game,” he told the publication.
He said he was driven out of politics by the “prospect of facing liars” in Parliament.
O'Sullivan cited the country's stable democracy as one of the reasons he voted for the governing party.
The party, which was formed last year, has been marred by internal divisions. It is heavily in debt, with unpaid employee salaries and creditors.
Last week, its founder and leader Mamphela Ramphele announced that she was quitting party politics to work within civil society.
Agang SA received 52 350 votes, 0.28 percent of the 18 654 771 votes cast, which earned it two seats in Parliament. - Sapa