At the center of the debate one finds Diebold Elections Systems, Inc. and Election System and Software, Inc. (ES&S), the top two producers of electronic voting equipment in the country. Yet the companies are probably not so much competitors as cohorts. Why would two huge companies in the same industry be bedfellows? Because the president of Diebold Election Systems is Robert Urosevich, and the vice president of election services at ES&S is his brother, Todd. Together, the two companies’ equipment tallied an estimated 80 percent of the popular vote in this year’s election. Curiously enough, besides sharing a bloodline, the brothers’ companies seem to be plagued by the same problem: an apparently hereditary inability to comply with state and federal voting regulations.