That’s really weird. In my state, the only signature that matters is the voter’s, and the voter can track their ballot though every stage of the vote counting process. I forget what it looks like exactly, but I think there’s an option for someone to sign if they’re helping the person fill it out.

I personally drop mine off at the ballot box because I feel like it’s safer (and I don’t want to pay for a stamp).

Requiring a notary to sign would probably be considered illegal voter suppression and potentially considered a “poll tax” (because you’d essentially need a bank account to get access to a notary).