It's impossible for a legal citizen not to have a legal ID and stupid not to keep it up to date.
Some more facts for WhichPhilosophy and others to ignore:
It wasn’t just poor African Americans who were disenfranchised. Most college IDs were not accepted under the law because they didn’t require signatures or have the state-mandated two-year expiration date—a criterion that made little sense at four-year schools. Only 3 of the 13 four-year schools in the University of Wisconsin system had IDs compliant with the new law.
That meant many schools, including UW-Madison, had to issue separate IDs for students to use only for voting, an expensive and confusing process for students and administrators.
Those stupid college students and administrators... why oh why couldn't they maintain a brand new UNNECESSARY form of ID to satisfy the GOP