The disdain for stay at home moms knows no political party. I was the recepient for same from several Republican women who could not believe I was a stay at home mom for my daughter. But they were more than willing to ask for my help with child care when they needed me. And I was more than happy to do so but I could have done without the attitude.
Not surprised that “career” women, including some Republicans, have a snobbish attitude toward working-at-home (better term than stay at home)mothers.