I think the real challenge is that the younger generation is not as actively engaged in party politics as previous generations. Many point to the fact that they're involved in other types of activities, other types of groups and organizations, but that doesn't necessarily mean they're involved in parties, which is where you often recruit your candidates from.
The real thing that parties need to do is get more young people involved in their parties and then you'll have a larger pool of potential young candidates. That is the big roadblock to getting more younger people elected to politics. Because if they don't see the relevance of the decisions that are being made in politics to their own lives they're less likely to want to get engaged.
I see that among my students and they don't understand why decisions that are made in Ottawa or Fredericton are relevant to them, and that is a real challenge.