Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_1255 ( "Elected" real, "Assembled" text, "Dissolved" text, "First member" text, "Second member" text )

### Question ###
How many different second members were there when John rudhale was first member?

### Accurate SQL ###

SELECT COUNT("Second member") FROM table_1255 WHERE "First member" = 'John Rudhale'