For example, in 2003 in the town of Schaerbeek in Belgium, an SEU malfunction gave a candidate in a location election 4,096 additional votes - and the error was only caught because the candidate got more than was possible, so it was investigated.
funny- read your post as an “SEIU” error as in “Service Employees International Union”-— the people who STAFFED and supported the steal in Fulton County, GA and nearly every precinct in Pennsylvania that did, as well as nearly all of Arizona’s “questionable” impossible precinct vote- many more votes than legit voters per precinct. Ballot stuffing AND digital fakiry through Spain (SCYTYL vote counting Co- and return trillions of bytes to the 6 Electoral vote states Trump was clearly winning— bang...zoom! Zip.)
4096? That is 2^12. So it is a single bit error in a binary counter. A really good reason to have automatic checksums to catch this type of error.