Re: Not The Real. Problem
As someone who lived in a state with endemic voter fraud, New Jersey, the pols are smart enough to make sure the numbers look reasonable. Thus there, if the fraud is done correctly, less votes than registered voters in all precincts. Chicago has been suspected of cooking (in Cook County) the election results for decades now and if so they have plenty of practice of doing it. They are not going to make so elementary a mistake as have too many votes for the number of registered voters. One common way of voter fraud is not to purge the roles of the recently deceased and have someone vote for them. This method has been done for decades in some areas of the US, North Jersey being one of the areas. Given that it is not very likely that the poll workers know most of the people in an urban precinct this trick is relatively easy to do. There are other tricks to do election fraud that would not show up in comparing the vote totals, percentage voting, etc. and would require an intense effort to stamp out.
What is over looked is most voter fraud is an effort to swing a narrow vote to other way in a state or local election. Given how US Presidential elections are actually done, a narrow victory could be swung by carefully done voter fraud in that state if the statewide vote is close enough. Typically this effective if the statewide race is decided by a few hundred votes or less. Get over a few thousand and this becomes more difficult to pull off. I do not remember what the margin in Illinois was but if it was a few thousand votes then I doubt Chicago voter fraud, if it occurred, changed the actual outcome.
The answer to whether voter fraud occurs in the US is yes it does and has been occurring for decades if not over a century. The real question is there the political will to stamp it out on both sides. Where I grow up it was the donkeys doing the fraud but that does not say in other areas the elephants are not guilty also. Also, the issue of 'Russian hacking' is an effort to hide the real problems with how elections are run in the US and that electronic methods leave a lot to be desired for vote auditing and recounts.