I don’t know enough to say definitively how bad this is, but this article about the hidden code running our electronic voting systems certainly looks disturbing:

This report summarizes the results of our review of the GEMS election management system, which counts approximately 25 percent of all votes in the United States. The results of this study demonstrate that a fractional vote feature is embedded in each GEMS application which can be used to invisibly, yet radically, alter election outcomes by pre-setting desired vote percentages to redistribute votes. This tampering is not visible to election observers, even if they are standing in the room and watching the computer. Use of the decimalized vote feature is unlikely to be detected by auditing or canvass procedures, and can be applied across large jurisdictions in less than 60 seconds.

From part 2:

In August 2014 Bennie Smith was approached by a number of candidates who insisted that their elections had been stolen. He disagreed with the group and offered to look into how the system works. In October 2015, Smith received a report from a candidate named Wanda Halbert. On Election Night, she had noticed that as votes accumulated, the number of votes in her race were somehow getting subtracted as new votes were added. On Election Day, as a part of his continuing research, Smith had taken a photo of a precinct 07701 poll tape (a results total printed from the memory card in a voting machine). In comparing the poll tape to the GEMS central tabulator report, Smith saw that the totals did not match. More votes were shown on the voting machine tape on Oct. 8 than on the GEMS central tabulator on Oct. 13. Smith brought this to the attention of Shelby County elections officials but only after Halbert pressed the issue was the inconsistency corrected. Smith began to research how votes that originate from the same source can change once they get into the GEMS program, beginning with the premise that sophisticated election theft would be near impossible, difficult at best; perhaps achievable in a crude or one-shot or localized way, but certainly not on a national scale, or as part of a plan to capture repeat elections. For that, one would need a system that is configurable, quick, precise, and usable by persons who are not master programmers.

From Part IV:

We used the GEMS fractional vote feature to alter an actual statewide vote database, rewriting all the polling place votes in the state of Alaska for the 2004 presidential election to change the outcome… Note that Bush/Cheney won with 145,836 votes; Kerry/Edwards received 75,665 votes. A number of other candidates receive a small number of votes… Although we could have simply changed the few numbers on this Summary Results Report, we chose a more elaborate plan. We used a spreadsheet to create vote percentages for each polling place, resulting in changing Kerry’s overall percentage from 34.73% to 55.24%, and Bush from 61.88% to 43.66%; we chose to give all remaining votes to Badnarik. Even though we changed over 200,000 votes in hundreds of different locations, we were able to achieve this in just a few seconds. Because it can be done so quickly, “Fraction Magic” can be performed as often as necessary on Election Night. The existing votes were transferred among candidates according to pre-set percentages. Because the decimalized vote feature built into GEMS allows an extraordinary amount of precision, it is possible to instruct the voting system to produce a landslide, a squeaker, or just a solid but uncontroversial win.

The author has a track record of being right, as detailed by the sources on her Wiki.

It is a seven part series, with five parts completed so far, and well worth a look.

It would seem the entire alt-right, as well as Trump’s people, should take a close look at this, and see if this is as dangerous as it appears.