From a 2003 article (link from a diary on dailykos) — I’d suggest reading the whole article:
http://www.scoop.co.nz/stories/HL0301/S00166.htm
On October, 10, 2002 Bev Harris, author of the upcoming Black Box Voting: Ballot-Tampering in the 21st Century, revealed that Republican Senator Chuck Hagel has ties to the largest voting machine company, Election Systems & Software (ES&S). She reported that he was an owner, Chairman and CEO of Election Systems & Software (called American Information Systems until name change filed in 1997). ES&S was the ONLY company whose machines counted Hagel’s votes when he ran for election in 1996 and 2002. The Hill, a Washington D.C. newspaper that covers the U.S. national political scene, confirmed her findings today and uncovered more details.
MuldraughTim’s diary:
http://www.dailykos.com/storyonly/2005/8/29/635/13717