His informal manner - he dresses casually with an open-neck shirt - brings a refreshing change for an electorate used to the stuffier style of traditional besuited politicians.
He appeals particularly to the young under 30s.
In the interview, he rules out joining any parliamentary coalition with the pro-business Regions which is still expected to hang on to its majority in the new chamber. They represent the interests of the "financial-industrial" elite, he says.
"Those in power today say they are fighting corruption, but their fight against corruption resembles a bee fighting honey," he says sarcastically.