I'm not quite sure what subject I'm being asked to address here.
Regarding your comments on the list, young voters can get on the list by registering at the polls on election day. The problem there is that it's an extra deterrent. No card comes in the mail if you're not already on the list, so you're not given that reminder. Requiring an extra step for people for whom going out might be a marginal decision is an extra problem. A lot of young people do mention this as a reason for not voting, if they're not on the list.