That's horrid.
Similar but luckily not as extreme as child abuse, some people may relate. I grew up in the north as you'd expect from the side bar. I grew up in labour household. You all get that though, it's 'We vote labour' not 'I vote labour' So all members of my household were expected to vote labour. Upon getting to voting age I didn't do that though, I voted for another party. to which I was asked why I'd do such a thing when I know it's a labour house. I dunno, maybe it's because I get to make my OWN mind up
So not as severe but you can bet this still happens. You get a household of 5 all voting for labour when in reality it's two people getting 3 extra votes.
In the case above it's blatant child abuse but even though he's not of legal voting age, she should still be charged with peverting the course of democracy too because it's blatantly clear he'd be pressured into voting the same as her at any given time thus allowing her 2 votes.