Maybe they should have asked in one of the states that is actually passing restrictive voter ID laws, and that is at the same time closing DMV offices in minority areas, limiting the hours that DMVs issue IDs, and has nearly non-existent affordable public transit.
The might have gotten different answers than asking in a state that is pro voter rights, in a neighborhood that has a DMV office, and that has excellent access to public transportation if for some reason the neighborhood DMV is not available.