What are the important questions to ask when acquiring voting technologies?

I met with a colleague this week, someone interested in beginning new research on voting technologies. He posed a question to me, which I thought I’d post here and see what sort of feedback I received. He wondered what are the five most important questions that election administrators should ask when acquiring a new voting technology. Or, as he posed the question:

With respect to a voting technology, what are the five most important questions that you need to know before acquiring a new voting system?

Of course, this is posed to election administrators, but I’d be interested in getting feedback from any readers. Please send email to alvarez.research@gmail.com.