The main objective for this study was to to test the usability of 4 voting systems and observe how the verification process occur and differ across these four systems. In a partially counterbalanced order, a total of 35 participants voted on each of the following systems: (1) Voter Verified Paper Audit Trail (VVPAT), (2) VVPAT with contemporaneous paper trail, (3) Voter Verified Audio Audit Trail (VVAAT), all these three methods using a simulated Diebold DRE style interface, and (4)Optical Scanner. The results show that with a simultaneous verification process (immediate feedback) provided by the VVAAT and VVPAT contemporanous systems, participants recognized and reported 60% of the selection errors while voting. With a delayed verification provided by the VVPAT system (paper trail was printed after vote was cast), 33%