But the network which filmed the revelations is debating when to show the interview amidst fears it could be seen as biassed if it contributes to wrecking Mr Gingrich's election prospects.
Conservative pundit Greta Van Susteren argued that to air the interview so close to the South Carolina primary was an 'ambush' on Mr Gingrich, while the candidate's daughters urged the network to treat their 'personal tragedy' with sensitivity.
Newt and Marianne Gingrich were married from 1981 to 2000, after his divorce from his first wife Jackie and before his marriage to Callista, who has been a fixture on the campaign trail.
His chequered personal life is seen as one of his biggest weaknesses, particularly among conservative and Evangelical voters.
Now Marianne has recorded an interview with ABC News which she says could end Mr Gingrich's career, according to the Drudge Report. » | Hugo Gye | Thursday, January 19, 2012
