Are you authorized to speak for Murphy?
Sorry. I thought this was an open forum and you wanted a question answered.
So speaking only for goatman, I will let you know that a person with the same skill set, same position, same number of years in the same position, same geographic location, same job market, etc. will make more working for McCain than Obama.
Hope this didn't offend you.
However, I get the impression you really did not want an answer unless it dovetailed into your preconceived notion anyway. Sorry to burst your bubble.
...since neither you nor the author of the piece gets into the areas I mentioned.
Here you are blatantly wrong. The author got into the areas you mentioned 100%.
In fact, ceteris paribus, a typical female staffer could earn 21 cents more per dollar paid to her male counterpart
He summed it up in the well known concept of ceteris paribus. You can't fault the author for your infamiliarity with this concept and his desire for brevity instead of listing every possible variable.
Sorry, doc -- you and your fellow libs have to admit that your saint is not 100% perfect, as much as you'd like him to be.