Incompetence or true believin’? An e-mail:

Agree with your post except for one thing: the presumption that Edward’s team didn’t Google Marcotte—that is, that they were unfamiliar with her work. That would bespeak galactic incompetence that, while not impossible to find on a presidential campaign staff, is unlikely, especially for a candidate who had the experience of being on a national ticket barely two years ago. They know every move they make is going to be heavily scrutinized by somebody.
It’s far more likely that she was hired because the staff was well-familiar with her work–may even have been fans—and didn’t have a problem with her anti-Catholic screeds. If there was incompetence, it was incompetence born of the left’s echo-chamber, in which Marcotte’s rants aren’t so extraordinary as to set off alarm bells.