Voting at 16 is starting to be a new threshold in some countries, as we are experiencing in Scotland. Nevertheless, it is still an ideal topic for a debate, where the confrontation of ideas may change opinions and reveal – or even modify – young people’s global attitudes towards political interest and participation. In 2009, a non-random sample of nearly two hundred 16- to 22-year-old youth in French-speaking Belgium was selected to discuss the possibility of lowering the voting age to 16. The same questionnaire was filled in at the beginning and at the end of the day to measure the changes in opinion. How an informed discussion changed or confirmed their opinions on the right to vote and on politics in general? Can we draw the same patterns of opinions about politics between the small minority who agreed with the idea and the large majority who rejected it?