Interesting. How old is your stepdaughter? I have a niece who is the same way. In her twenties, otherwise intelligent, but in politics, like her mother she is completely impervious to any reason at all. Of course they are both Obama voters.
In her thirties...and a lawyer. A very nice person, but when it comes to politics, Hillary is a genius, and big government knows best. She’s not a real fan of Obama, but she still voted for him....because he’s not an “evil conservative.”
Interestingly enough, it was female conservatives that I met through work and school who convinced me about politics. I wish I could convince my three nutty lib sisters the error of their political ways.