Lots of stories and posts about Fundrace, a tool to see if your neighbor donated to a politcal candidate in this election cycle. Fundrace uses data from the Federal Election Commission. MANY other search tools provide access to this public data and sometimes you'll find interfaces that offer different access points.
A wonderful set of databases that I've used for several years come from PoliticalMoneyLine. They offer serveral free and other fee-based search services.
On the free side, you can use this interface to search and find donations by employer name or occupation of the person making the contribution.
Btw, the answer is yes, you'll find donations made by employees at Google, Yahoo, Microsoft, and other companies.
Finally, another database (also free) allows you to search PAC (political action committee) data and find out where they've put their money.
Here's the summary page for the Yahoo Inc Political Action Committee.
The Original Search Marketing Event is Back!
SES Denver (Oct 16) offers an intense day of learning all the critical aspects of search engine optimization (SEO) and paid search advertising (PPC). The mission of SES remains the same as it did from the start - to help you master being found on search engines. Early Bird rates available through Sept 12. Register today!