To register to vote you must go to the electoral registry office. Upon arriving at the site it is necessary to fill out a form that makes the registration request, where all the citizen's data must be presented. After filling out the form, the citizen must hand it over to the clerk of the electoral registry office, who will analyze whether all the fields on the form have been filled out correctly.
If the form has been filled out correctly, the clerk will complete the registration and the citizen will receive the voting card by mail.
The main reason why some states have more representatives than others in Congress is because they have bigger populations. This does not change the number of Senators though.
