There are already measures to help seniors, such as the Guaranteed Income Supplement.
The Canada Child Benefit helps families that have children. Among the studies that were done, the one done by Luc Godbout from the Université de Sherbrooke considers all of the measures in the 2016 budget and their impact on the various types of families with children, including single-parent families. It is clear that the middle class will benefit the most, in the income level we are talking about.
However, single people and childless people receive no benefit from this measure. They can benefit however from the reduction in the second tax bracket, if their income is in that bracket.