Victorian Premier Daniel Andrews, the CFMEU, preference whisperer Glenn Druery, Opposition Leader Matthew Guy and his former chief of staff Mitch Caitlin have all been referred to the corruption watchdog as the state election turns nasty and is engulfed by legal action and corruption claims.

Greens leader Samantha Ratnam called on both sides to bring Victoria into line with other states to ban parties gaming the upper house voting system that she called a “blight on our democracy”.