Children mature in different abilities & experience at different ages. Legally an 18 year old can drink liquor, but most don't know how to handle it, for instance. Once we had to reach age 21 in order to vote. The past few generations have taken much longer to mature, have less experience in adult situations than formerly, & are frequently used by adults with political agendas the young just don't & CAN'T understand.
Whereas the experiment of lowering the age to 18 has proven to be disastrous, both to the children themselves, & our nation in general, even deadly sometimes, we demand that the official voting age go back to 21, at least! We need adults in charge of our nation. Children should not vote!