By last night almost 300,000 people had signed an online petition challenging Mr Duncan Smith to survive on £53 a week, or £7.57 a day, after he insisted he could "if I had to".
It was set up when David Bennett, a market trader, told BBC Radio 4 that the sum was all he had to live on after his housing benefit was cut - and Mr Duncan Smith responded by claiming he could manage on that amount.
The row began as cuts to benefits came into force this week. They include reductions of up to 25 per cent in housing benefit payments if recipients are deemed to have spare rooms - the so-called "bedroom tax" - and below-inflation increases in benefit rates.
Disability living allowance is being replaced by the personal independence payment, while trials are due to begin in four London boroughs of a £500-a-week cap on household benefits. The first pilot of the new Universal Credit system also begins this month.
Some readers comments;
He owns several homes, has huge public and private income, engaged in expenses scams, is a sociopath and a failed military man. He's basically like the christmas grinch, and quite honestly reminds me of Mr Burns from the Simpsons. Just a hateful man - a living grim reaper
318 1 •Reply•Share ›
Maythefarcebewithyou olympic • 19 hours ago
You forgot to mention he is also a failed candidate for Prime Minister, having been rejected in a general election. (Come to think of it, so was Cameron)
82 •Reply•Share ›
Quizzimodo Maythefarcebewithyou • 7 hours ago
IDS never got as far as a general election. Even the Tories realized he is totally unelectable