Ideas can only be deposited on the City's platform with a Mon Paris account, which the audit flags as a digital barrier, especially for the quartiers populaires, since other cities take proposals in person; the platform also carries the vote, the association to others' ideas, the published rejection reasons and the tracking of each winning project. The paper vote is the other pillar and the one that grew: ballot boxes in every borough hall and the Hôtel de Ville from 2014, then fixed and mobile boxes in schools, parks, markets and metro exits staffed by agents, about 200 in 2016, more than 300 in 2022, 505 in 2025. Online voters plateaued at 38,000 to 39,000 from 2017 while paper voters tripled between 2015 and 2019 to 73% of the total, and paper voters say they learned of the PB mostly from an agent, an elected official or a public event. In 2018 and 2019 the City hired contractors to send ten, then twenty, trained mobilisers into streets, markets and events, with 5,200 people approached and 3,700 sent to a ballot box in 2018. Around these sit public information meetings, co-construction and acceptability workshops, exploratory walks and the commissions; writing help is offered in the borough halls' deposit permanences, the Maisons de la vie associative et citoyenne and by the chargés de participation. In the quartiers populaires, funded associations and the équipes de développement local go to residents directly, from idea to vote, through centres sociaux, schools and tenants' associations. Project holders are coached to campaign with a downloadable kit, Facebook and Twitter guides and the hashtag #budgetparticipatif, and subscribers get email updates on projects.