There is also the MSM's tendency not to investigate, due to political correctness, the government's tendency to stone-wall to avoid looking incompetent, and the politicians' tendency to not pass laws that would hinder their chances of winning the next election.
One thing about voter fraud: a lot of people who complain about how much it's happening love to cite the existence of inaccurate voter rolls. Those exist in spades, and no one doubts that. But every election, we compile a list of everyone who voted, so it should be a very easy matter to translate inaccuracies in registration to actual instances of voter fraud. Note that instead of citing actual counts, there's almost invariably a citation of potential fraud--and that's because the actual counts do not bear out the claims.
Of course, the biggest reason that inaccurate voter registrations exist is because people don't contact the registries to tell them they've moved, and the government hasn't put much effort into trying to track down people when they move and actually update all the various registries. Cynically, one can suggest that the reason for the latter is that politicians would rather continue using the inaccurate voter registrations as an excuse to conduct voter intimidation than actually fix the problem.
It's definitely the case that, in Australia, when automatic registration was introduced it was introduced and supported by the left-of-centre parties who pundits suppose would benefit from having extra voters on the roll, and weakly opposed by the right-of-centre parties who pundits suppose would be hurt from having the voters on the roll.
But honestly, the idea that the government should track people down to put them in a registry strikes me as really unamerican, especially when you put it that way. I can imagine Democrats who would stand to benefit from it being like "That sounds yuck".
