What is the ruling on working as a scribe or typist for a candidate for the National Assembly who buys votes, knowing that my work does not go beyond typing?

There is no blame upon you for working with the aforementioned person, as long as the work is permissible and does not aid in anything forbidden. The salary you receive is lawful. However, you must advise the man to stop buying votes and offering bribes due to their unlawfulness.