According to Ballotpedia, the current election cycle has the largest number of voter ID measures in a single year.

reported by one outlet so far · Attributed statement · first recorded Aug 25, 3:30 PM

How each outlet reported it

NPRLean left · Aug 25, 3:01 PM

This is the largest number of voter ID measures in a single year.

Cites: Ballotpedia · Details: largest number; single year