In the Philippines, voters aged 18 years old and above are eligible to vote for barangay officials, including the barangay captain and councilors. However, voters aged 15 to 17 years old are allowed to register and vote for the Sangguniang Kabataan (SK) chairperson and councilors during the same election. The SK is the youth council responsible for addressing the concerns and needs of younger constituents.

To summarize, voters aged 15 to 17 years old are allowed to vote for the SK chairperson in the Sangguniang Kabataan elections, while voters aged 18 years old and above are eligible to vote for barangay officials.