Three races expected to be decided today with runoff elections in Miami and Miami Beach. Miami-Dade Elections Supervisor Christina White says they do voter roll maintenance and post-election audits to ensure security. In Miami Beach, Commissioner Steven Meiner squares off against former Commissioner Michael Gongora for the Mayor post. In Miami, suspended District One Commissioner Alex Diaz de la Portilla is up against businessman Miquel Angel Gabela. District Two Commissioner Sabina Cova is trying to retain her seat against community activist Damian Pardo.