Minnesota: The Office of the Minnesota Secretary of State strongly discourages voters from using cameras or video recorders in the polling place. And you can't share your ballot results with anyone in the polling place, but it is unclear whether you could legally share it with the rest of the internet.
Reasonable, as usual. Record if you must...but make sure there's a good reason for it. Like suspected disenfranchisement. Which should always be recorded regardless of the law.
I can tell you this: if I see something going on at the precinct, I will video it and they can sort out the charges later. I have seen multiple videos uploaded to the internet from GA showing nefarious activities at the ballot box before (it is against the law here), so it's probably not heavily enforced in most cases.
I don't see the issue either. Already illegal in Canada.
Yeah, but you guys actually have legitimate elections.
So here's a map from the article cinyc posted. I tried to categorize the states as best as possible:
Maroon - photography/video of all types banned
Red - photography/video bans set by each county
Orange - photography/video banned when disclosing a vote, how someone else voted or similar cases
White - photography/video allowed