Strong circumstantial evidence says vote totals were altered in 2016 (but few will admit it).

[karynnj]

37. Not by the exit polls -- she was winning in polls before the election

Campaigns get exit polls on election day. In fact, after 2004, the networks were far more hesitant to show the exit poll results or to base predictions on them. Now, they tend to be used more for after the fact demographic analysis and analysis like finding in 2016 that the people who disliked both HRC and Trump, broke for Trump.

In 2016, we went into town to join the Democrats in Burlington to see the results. The first hint that my husband and I had that it was not going to be good was between 7:30 and 8:00, we saw Madelyn Kunen, the former governor of Vermont. We know her reasonably well and were surprised that she looked stunned and extremely unhappy. She had her coat on and was leaving. This was before the 8:00 results, where other than the sure thing states, were too close to call. From the news feed, we could see it was not going to be the landslide for HRC that some expected.

Later, we heard the stories told by the HRC insiders. Early in the day, they were concerned with some turnout numbers. As the results came in - and they saw where they were from, they were increasingly seeing bad news.