WASHINGTON, D.C. -

Several big corporations have reaped millions of dollars from "Obamacare" while supporting GOP candidates who vow to repeal the law.

Democrats have pointed out that Koch Industries received $1.4 million in federal subsidies from a now-expired provision of the sweeping health care law.  Koch officials are helping fund TV ads attacking Democratic candidates for supporting President Barack Obama's health law.

The subsidies were part of a $5 billion provision to help employers offset the costs of early retirees not yet eligible for Medicare.

Several companies that steer most of their political contributions to Republicans have also received the subsidies. That includes $213 million for AT&T and $37 million for United Parcel Service.

Pfizer received $23 million in subsidies. GlaxoSmithKline received $14 million.