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_25030512_41 (district VARCHAR, incumbent VARCHAR)

### Question ###
Name the number of district for tom marino

### Accurate SQL ###

SELECT COUNT(district) FROM table_25030512_41 WHERE incumbent = "Tom Marino"