Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the number of total candidates when registered voters is 47742?

### Inputs:
table_name: table, columns: ['Electoral District', 'Registered voters', 'Seats in Congress', 'Candidates per party', 'Participating parties', 'Total candidates']

### Response:
SELECT Total candidates FROM table WHERE Registered voters = 47742