Section 47 of the 2002 Constitution of East Timor sets out the right to vote: "1. Every citizen over the age of seventeen has the right to vote and to be elected. 2. The exercise of the right to vote is personal and constitutes a civic duty."

References:

2002. Constitution of the Democratic Republic of Timor-Leste. http://timor-leste.gov.tl/wp-content/uploads/2010/03/Constitution_RDTL_ENG.pdf.