It's reasonably well known that the governor of California instituted a thorough review of voting machines which culminated in a fairly damning report earlier this year. San Francisco is now getting ready to spend $12 million on new machines, and the manufacturers have (apparently successfully) resisted requests to open up their source code. The reason they give is that "it would amount to giving away to competitors their proprietary software code".
So never mind scrutinized correctness, let's keep the buggy stuff to ourselves. These people make me smile as I hit my head against the wall. If democracy is as important as everyone keeps claiming then the most important thing is to count the damned votes correctly. But this is America, so profits have to come first.