Cambridge residents who are at least 12 years old, regardless of citizenship status, are eligible to vote. College/university students whose dorm/apartments are in Cambridge are also eligible to vote.
The fourth Participatory Budgeting vote will take place from December 2-8, 2017. Voting takes place online and at numerous events around the city during vote week. Voters will be able to choose up to 5 of the 20 projects on the PB4 ballot. They will not need to rank their choices or do any math.
You can read about the voting process and the winning projects from past PB cycles here.