Whichever option Newham voters choose will come into effect in May 2022.
Voters will decide in a referendum held on the same day as the London mayoral and London Assembly elections. A by-election in East Ham Central is also being held on the same date - May 6.
- Credit: Ken Mears
Josephine Grahl chairs Newham Voting for Change, which is for the committee system.
She said concentrating power in the hands of one person as mayor is bad for democracy and all elected councillors would be sovereign under a committee system.
"It would be a big step forward for Newham," she said.