Nearly as I can tell, they have new voting machines that didn't always work right. The poll workers were also often confused and unhelpful.
I'd note also we got a letter in the mail yesterday informing us of a change in our polling location, a day after the election. The letter was dated May 22.
I tend to think "new things" often don't work quite right and it's not because of intent.
In Ohio, once the wife messed up her ballot and the poll workers were absolutely clueless about how to get her another one. It took an hour to sort it out, I was rather annoyed.