You mean the young people who cannot (or could not) vote because they are under 18?
Also very bold of you to assume voting does much.
(coming from a 22 year old who votes at every federal, state and local election).
People under 40 have much lower voter turnout than people over 40. 75% of 65+ year olds vote. Less than 50% of 18-25 year olds vote. I wasn't referring to children.
The way people voted in the last federal election did a whole lot. Granted, it’s effectively limited to people in swing states.