I favor a very broad level of universal suffrage.
The right to vote should be extended to everyone who is or will be sixteen years of age on the next general or municipal election day, who resides in a state (or resided in a state prior to incarceration in prison or military service, in which case that individual should vote based upon the address where they resided immediately prior to incarceration or military service), without regard to citizenship.
Ideally, parents of children not old enough to vote, when the children reside in the state, should be entitled to cast an additional vote on behalf of each such child, as well.
In cases where there is only one parent of a child who resides in the state who resides in the state, that parent would cast the vote for that child. In cases where there are two parents of a child who resides in the state who resides in the state, and one parent is male and the other parent is female, the male parent would cast the vote for the male children not old enough to vote, and the female parent would cast the vote for the female children not old enough to vote. In cases where a child who resides in the state is not identified as male or female, or the child has two parents are both of the same sex and each of them reside in the state, the person who casts the vote for the child would be determined by mutual agreement of the parents, or if no agreement was reached, as determined by lot in the first year and alternating each subsequent year.
Voter registration would not be required, nor would presentation of identification.