Newark, N.J., Mayor Cory Booker (D) will live on the equivalent of food stamps — about $4 per day in New Jersey — for one week starting Tuesday after a Twitter exchange  last month over the government's role in the program evolved into a challenge.  

The challenge emerged from a back-and-forth with Twitter user @MWadeNC, a North Carolina woman. She accepted Booker's challenge, and has since protected her tweets, telling the Associated Press she received threats since the story was reported but will still participate. The nonprofit Food Research and Action Center promotes week-long food stamp challenges and has worked with various politicians on the project.

Celebrity chef Mario Batali participated in the challenge this year on his ABC show "The Chew." Colorado Gov. John Hickenlooper (D), multiple members of Congress and the mayors of Las Vegas, Philadelphia and Phoenix have previously participated

Booker has been asking more people to participate in the challenge and explaining its terms over the past few days on Twitter.