Well I'm not married or living with anyone but I think my brother and sister in law vote for different parties but I guess they just get on with it and don't argue about it.
That's one thing we agreed not to judge the other by how they vote. Most things I defer to him but we rarely agree on who to vote for lol for various reasons. Also there are so many things to vote for some he doesn't know and I will. Here you don't have to vote for everything just what items/people you want to vote for. I also work for the polls and worked with someone who voted the way her husband did even after he died and so did her daughter. That's too strong of control for me.