" Experts are calling them the most serious voting-machine flaws ever documented. Basically the trouble stems from the ease with which the machine's software can be altered. It requires only a few minutes of pre-election access to a Diebold machine to open the machine and insert a PC card that, if it contained malicious code, could reprogram the machine to give control to the violator. The machine could go dead on Election Day or throw votes to the wrong candidate"