Clark County would love to replace our voting machines with newer, shinier ones that require less maintenance. But that would require money, which is something many local governments don't have a lot of at the moment.

Needs to be calibrated sometimes. I work elections for Clark County, Nevada. I've worked every election the last 10 years. And yes, the touchscreens can fall out of calibration and make it difficult to select the correct candidates. I can't speak to other election districts, but here in Clark County we're trained on how to perform this calibration on site (it's very simple) so that any problems reported by voters can be handled right away.