If the genders are equal, why would one feel pressured by the other to make a private vote one way or the other.
I’ve seen parents and children go to a voting station together, but never a husband/wife. It probably happens, but I doubt there are many cases where the husband follows the wife into the booth and says “I’m going to beat the schiff out of you if you don’t vote for Trump.” So wive’s are free to vote how they want - and if the genders are equal, they’ll do that.
Some more than others. There are so many to choose from these days.