Election fraud
really only works when the race is tight Tom so your outrage that there was no concern about the Democratic victories in 2006 has little basis because of a number of things. Most Dems won by fairly wide margins. Also, the major voting machine manufacturers are controlled by Republicans not Democrats. Even if the Dems wanted to commit election fraud they wouldn't have the industry clout to carry it off.
The concerns are all valid. I'm a computer programmer. I could create a machine I could manipulate later and nobody could catch.
Art