"Prescott under pressure to quit" "....sleaze enforcer to probe Prescott". The headlines show what a bombshell a political affair can be - the deputy prime minister could even lose his job over his adultery with Tracey Temple, his diary secretary. He's not the only MP caught out recently over an affair – there's Boris Johnson and Mark Oaten for instance. David Blunkett also made the headlines for his relationship with a married woman.
So what drives politicians to take such risks? And what is the impact on their families?
Martha is joined by two women whose lives were changed by Westminster affairs... Edwina Currie who had a four year affair with John Major and by Margaret Cook whose husband Robin left her for his secretary Gaynor. She's written an open letter to Pauline Prescott in today's Daily Mail.