Protester Heather Simpson, 46, from Battersea said: “My husband is a nursery worker but his low salary means we are forced to claim housing benefit.
“As a wheelchair user the housing association provided me with a three bedroom house, and now we’re going to be hit by the bedroom tax.
“I signed the petition because I want Iain Duncan Smith to live on £53 per week so that in future he might not be so quick to dismiss the challenges faced by the people living in poverty.”
Brie Rogers Lowery, UK director of Change.org said: “This is a remarkable campaign. It’s far and away the largest and fastest growing petition in the history of Change.org in the UK and is a clear example of how social media has put the power to shift political debate into the hands of the people.
“Anyone, anywhere can come to Change.org and start a campaign as powerful as the one Dominic launched last week.”