Political action committees for health care companies have mostly donated to Republicans in this cycle, according to the Center for Responsive Politics. That's true across multiple sectors — including doctors, pharmaceutical companies and insurers — though it's worth noting that a whole lot of Democratic candidates have sworn off corporate PAC money.

The big picture: Hospitals are the exception. The American Hospital Association's PAC had given significantly more to Democratic candidates, as of Oct. 26. Individual hospital systems' PACs break in both directions.