Hillary was talking about her mother.
Hugh Rodham was a staunch Republican and always expressing his opinions -- in the way that some very partisan people do.
Dorothy Rodham was a Democrat, never talked politics, and never openly challenged her husband.
But in the voting booth, Dorothy voted for the Democrats.
So Hillary's comment really doesn't hold up.
Women don't let their husbands (or fathers or sons) determine who they vote for.
But it is true that women don't always stand up to their husbands.
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The other thing about HRC's comment is that she assumes that gender or sex should determine how one votes in every case, and that the voting of single women for Democrats is legitimate in a way that married women voting for Republicans isn't.
Or that Black or Asian women voting as their husbands do is legitimate in a way that White women voting as their husbands do isn't.
Maybe this is an outgrowth of her belief that other women owe her their votes because she is a woman or maybe an outgrowth of a belief that views opposed to hers aren't really legitimate.
The reference to race is an example of that feeling that people with opposing views are beyond the pale -- deplorable and irremediable.