I don't think they can be dealt with. But I'm willing to listen to your ideas. How would you deal with vote buying? How would you stop the scenario where a guy says "I'll give you $1,000 if you vote for candidate X" (or "I know where you live, I'll break your kneecaps if you vote for candidate Y")?
Quite a few husbands believe they should have control over their wives' votes. I guess you'd say they should have the courage to leave them and wreck their children's lives and be ostracized by their family and community?
And it's not hard to imagine certain employers having a strong opinion on how you vote on specific measures. Of course they couldn't compel anyone to reveal their votes, but it could be made customary enough that refusing to would be enough of a signal. I guess you'd need the courage to quit and take a lower paying job?
As for what happens in marriages or other social settings, yes, wives can coerce their husbands, fathers can coerce their adult daughters, friends can coerce one another. If your counterpart is the kind of person who would threaten to blow up your relationship over how you vote, yes, I would suggest maybe that tells you something about who they are and whether or not you want them in your life. But if the relationship means that much to you, you can always go along to get along and let them tell you how to vote. I think that says something about how much you value your vote though. And at the societal level, I don’t think this would have a meaningful impact on governance