I stood as a candidate in the 2015 UK General Election and have to say seeing the process from the inside was quite impressive. We got to monitor the count and have teams making our own tallies of votes as the paper ballots were being counted by looking over the counter's shoulders. We could then predict how each candidate was doing from our sample and verify that the final result fell within our predictions. In all I came away very satisfied that the final tally was indeed a true reflection of the voter's intention.

A good tip if you want to voice your frustrations at the candidates: Just write it down on your ballot paper. It will likely spoil your ballot, but everything you write will be read carefully by the returning officer and all of the candidates to see if everyone agrees it constitutes a valid vote. If you clearly voted for a candidate and didn't write anything that could be personally identifiable it may still be counted as valid anyway.

I didn't win by the way, but did pretty well.

*conspiracy

Adding video to channels (Conspiracy) - requested by Mordhaus.

There was an attempt at making completely open source (hardware and software) voting machines, but it stalled a while ago. http://openvoting.org/ for more info.

Companies like Diebold are quite scary.

Also, here's what EVMs look like in the worlds largest democracy: https://en.wikipedia.org/wiki/Indian_voting_machines

Much simpler than all these full-PC touchscreen systems in US, but still possible to tamper with...

Evidence Of Election Fraud? has been added as a related post - related requested by mxxcon on that post.