The former Mayor of Tower Hamlets is expected to break cover today a week after he was thrown out of office by an election court.
Lutfur Rahman has not been seen in public since the court ruled his election was tainted by corrupt and illegal practices.
The Electoral Commission, the election watchdog, yesterday dropped Tower Hamlets First from the official register of political parties.
Rahman is expected to join other left-wing speakers at a rally of supporters at Stepney in east London this evening.
The former mayor is said to be consulting lawyers about a possible challenge to the court ruling.
Voters will go to the polls to choose a new executive mayor for Tower Hamlets on June 11th. Rahman is banned from standing.