Can imagine a load of 16 and 17 year old lads voting for Farage. Well of those who will - hardly any 18 year olds vote so can't see it making any difference to any final result so a big shrug here.
On principle, though I would make anyone whatever age take some kind of test to prove they have the competency to make an informed decision to vote and ban anyone who gets their political opinions from the social media bubble they live in. But that's just me leaning a bit to the right this morning as Bill Hicks would say...