Perhaps the focus should be helping people get out of those kind of controlling situations (which will affect them 365 days a year) rather than on worrying about the fact that once every five years they might be forced to vote for a candidate that they don't support.There's a good reason everyone in the polling station gets an individual ballot and their own booth to fill it in. Conversely, with widespread postal voting, there's more than enough evidence in some communities that the 'head of household' requires all the members of the family to fill in their postal votes the way he tells them to. That needs to be stopped, and the only way to do that is to return to the 'norm' being attending a polling station in order to vote.
To my mind the massive impact on their lives and freedoms trumps the almost immeasurable impact on the democratic process for everyone else.