16-year-olds would never vote to re-elect any Government that had already served two full terms. Party or ideology would not enter into it. They would vote for the other lot, regardless.
As for the list of things that they can already do, they shouldn't be doing most or all of them. And 16-year-old taxpayers? When the school leaving age has gone up to 18? Either Sixth Form Saturday jobs are paying a lot better than they used to, or certain politicians need to get out more.