Yes, the new vote totals in Waukesha County are very plausible

University of Wisconsin political scientist Charles Franklin (who co-founded Pollster.com, the forerunner of HuffPost Pollster) lent credence to Nickolaus’ amended results, however, arguing that Waukesha County’s vote “appears to be corroborated by reports from the city on election night, by a Democratic election official and by the plausibility of the corrected data.”

So just how common is this the sort of error that Nickolaus claims she made on election night? Michael McDonald, a George Mason University professor who studies voter turnout and closely monitors election results, said they are “not uncommon … we see these sorts of errors happen all the time.”…

McDonald said he has found discrepant numbers even in the final certified results. “I’ll go back and ask the election officials why the numbers don’t add up, and they’ll say, ‘Oh, we made an error,”” he said. Since correcting such errors requires action by a court, he said, “election administrators will generally just let those errors persist” as long as they do not affect the election outcome.