happened in texas. >> all of a sudden, i saw this ad, what is this. >> reporter: chuck hobson is running for a seat in the texas state legislature. >> a friend of mine called and said there's a corporate ad against you in the paper. who is it? he looked it up on the website. >> reporter: it read, vote for a real republican and paid for kdr development inc.. the president had run unsuccessfully against hobson in an election. there was nothing citizen hobson could do except raise his own money to fight back. it's the sort of thing that keeps democratic lawmakers awake at night. imagine a fort tune 500 corporation doing this. democratic congressman chris van holenwill introduce a bill this