Currently 4 are electors and so will have the right to vote in the future conclave: Cristóbal López Romero, Daniel F. Sturla Berhouet, Charles Maung Bo, Virgilio Do Carmo da Silva. Anche Ángel Fernández Artime will be electors.
The other 6 are not electors: Angelo Amato, Tarcisio Bertone, Raffaele Farina, Joseph Zen Ze-kiun, Óscar A. Rodríguez Maradiaga and Ricardo Ezzati Andrello.
As for Bishops, there are 114 in total.
Historically, the first Salesian bishop was John Cagliero (7 December 1884), then chosen as a Cardinal in 1915.