I often say that election security is by far the hardest technical problem I've ever encountered. Why? Four reasons:

1) Contradictory critical requirements, particularly vote secrecy vs. transparency.

2) No truly neutral trusted third parties.

3) Election do-overs are generally impossible, so the ability to merely detect problems is insufficient. You have to reliably prevent them.

4) Much of the technology than can manage the complexity of elections is inherently untrustworthy.

@mattblaze

The only good solution I know is to have a physical box, have everyone check that it's empty, have all the ballot papers put in the box by voters while everyone watches, then shuffle the papers, then take them out and count them while everyone watches.

@neroden @mattblaze Perhaps Matt should have included "scalable to millions or billions of voters"...
@brainwagon @neroden @mattblaze scalable to 25m in Australia

@davidgerard @brainwagon @neroden What on earth makes you think ensuring the integrity of voting in Australia (or anywhere else) is simple or easy?

There's more to election integrity than the vote-casting technology, and most of the hard properties on my list have nothing to do with computers.

But you're the expert.

@mattblaze on, I'm agreeing with you. Paper scales up great, and it does so because there's a pile of institutions and general trust in the process. Flashy tech serves no part of this.
@davidgerard That "general trust in the process" is more fragile than it looks, until it breaks down.

@mattblaze I did a few months' work experience at the AEC in the 1990s and scrutineered (candidate's representative watching the AEC staff count the paper votes) for a friend when he ran in the late '90s, fwiw.

One thing that helps a lot is that voting is compulsory. This sounds weird, but that means the AEC tries super hard to make sure every single person over 18 is registered and able to vote, and to make voting super-easy. You can get a postal vote for the asking, or vote pre-poll easily.

From outside (UK or AU), the US's voting problems appear to be voter suppression, at both the registration and voting stage. The UK government has been getting into suppression at the voting stage of late.

i keep having to answer "but bl*ckch**n will solve elections!!" with "AUSTRALIA, DICKHEAD" and "NONE OF YOUR PROBLEMS ARE THE TECH"

@mattblaze oh, and that the AEC are painstakingly neutral public servants and take that super seriously

@davidgerard That you have hardworking, scrupulously neutral public servants is great, but the problem is, what if they aren't as neutral as the system assumes that are. Or, equivalently, what if people THINK they aren't neutral. It can, and sadly does, happen in a heartbeat.

The trust and legitimacy of an election system is an extremely fragile thing.

@mattblaze oh yeah. There are technological solutions to Nazis, but they tend to be a bit drastic.

@davidgerard @mattblaze
Ascribing one country's problems to another and assuming it is the same there is presumptuous. Likewise, ascribing one's solutions to another could also be.

Having said that, "integrity" issues seem to exist more in some places than others.

I have also seen the AEC at work (volunteered in the 1990s) and while bad eggs exist everywhere, the checks and balances in place gives me reassurance.