Yes, the title must already be previously registered with the Consulate. If you are unable to vote, you must justify your absence. Check the rules on the site: http://novayork.itamaraty.gov.br/pt-br/servicos_eleitorais.xml
Please call NY Consulate, phone internet. Do not be left to vote or justify, so there will be no future problems ....
Thanks! Your answer is awaiting moderation.