While there have been thousands of ballot challenges disallowed in Minnesota’s election recount because they are “frivolous”. There have been more than 700 “legitimate” challenges that unless they are withdrawn will be reviewed by the State Canvassing Board.
Some of these challenges are likely to be dismissed very quickly such as the first one in this video. It’s a ballot the election judge filled in when the original ballot wouldn’t run through the machine. It’s being challenged not because it’s a duplicate, but because the election judge didn’t fill in the ovals entirely. The UpTake’s Grace Kelly shows us that and some other challenges.