Found this...
http://www.goodguide.com/contributions#sector=All%20Categories&sort=total&query=
I've seen sites like this before. Unfortunately they're a bit misleading. Example: when sorted by largest total contribution, AT&T comes out on top with over $5 million given to republicans and $3 million given to democrats. Remember that corporations are not now, and weren't before, permitted to contribute to campaigns. The number takes into account PACs organized under the corporation AND individuals associated with the corporation. Both PACs and individuals are capped ($5,000 for PACs, $2,400 for individuals). This is not actually a measure of how much a corporation gives to a particular party.