The majority of electronic voting machines in use today are manufactured by one of four companies: Diebold Election Systems; Election Systems and Software (ES&S); Hart InterCivic; and Sequoia Voting Systems. While all electronic voting machines directly record and tabulate votes electronically, the way votes are cast differs between machines and models.
Many direct recording electronic (DRE) voting machines record selections when a voter presses buttons on the machine's screen. These are called touch screen DREs. On other electronic voting machines voters navigate through the ballot using a Selection Wheel (like an iPod) instead of touching the screen. Other machines require the voter to insert an access card to initiate the voting process, while still others require an electronic ballot or an access code to be entered.
Below is a step by step guide to using the most popular model of electronic voting machine from each of the top four manufacturers. Operator manuals for each model of machine are included, as well. Instructions for the use of optional features such as a voter verified paper audit trail have been included when applicable, although particular features may not be used in every polling location.