Just no need
Voting machines in my opinion are a solution without a problem and a solution that introduces further more serious problems.
Who exactly is driving the grab for voting machines, lobbyist representing the industry most likely.
What is wrong with a pen, a voting card and an X in the preferred part. How hard is that? The disabled or infirm can be helped out and most importantly its as idiot proof as anything can be!
Oh yes and it provides a physical audit trail as well for recounts and disputes which incidentally happen less when manual counting is utilised.
Why oh why oh why must the weaken such a resilient system that works, is more secure, more idiot proof and only marginally slower and probably cheaper.
I thought surety of votes was important or has the UK and the US forgotten the recent election snafus including the prosecution in the UK for electoral fraud over postal votes, the hanging chads of 2000 presidential vote fame, the spoilt ballots of the Scottish Parliament cock up, the 2004 Presidential Vote scandal in which several election monitors recorded irregularities with supply of machines in certain deprived areas although since the election committees are non politically independent (Florida) what can you expect.