File images of Diosdado Cabello Venezuela's National Assembly is set to meet Saturday to elect its leadership and likely thrash out the country's political future as President Hugo Chavez battles cancer in Cuba and debate rages over whether he can be sworn in to a new term next week. The lawmakers' vote will be a key political test for the assembly's current leader Diosdado Cabello, the regime's number three and a perceived rival for power with Vice President Nicolas Maduro, Chavez's handpicked successor. File images of Diosdado Cabello.