The head of state called a new election after April's election wound up in a protracted deadlock, with the two sides on 26 seats each.
According to the writs issued by the head of state, only candidates who contested April's election can run in this month's one.
If any of the nearly 200 candidates don't want to go a second round, they have until tomorrow to withdraw.
The second election is scheduled to be held on May the 21st.
But that remains uncertain, with the FAST party today filing a Supreme Court challenge to the Head of State's decision.
