EarlyAd: A System for Real-Time Surveillance of Brazilian Early Electoral Ads on Twitter. - Marcelo M. R. Araújo; Samuel S. Guimarães; Márcio Silva; Josemar Caetano; Jonatas Santos; Julio C. S. Reis; Ana P. C. Silva 001; Fabrício Benevenuto; Jussara M. Almeida (HT, 2022)