I mean....the youth in general don't usually come out for elections, but I'd like to think that when they do, they'll be voting for their own long-term best interests. When it comes to gullibility, plenty of older people fall for scams and cults all the time, I mean shit, look at Brexit, a case where mostly older voters voted for something they probably didn't do too much research into a side from watching a political ad and just outright believing it. If impulsivity was a problem, then older people can have that problem too. Plus...you're talking about 9 year olds? Really? It's absurd to make the argument that the group of youths a mere 1-2 years before the 18 year old adulthood designation gaining voting rights would be the same as 9 year old children gaining the right to vote.