Graph showing distribution of various demographic groups without photo id
So maybe it is all about disenfranchising minorities, just maybe?
A new National Agenda Opinion Poll by the University of Delaware’s Center for Political Communication reveals support for voter identification laws is strongest among Americans who harbor negative sentiments toward African Americans. Voter ID laws require individuals to show government issued identification when they vote. The survey findings support recent comments by U.S. Attorney General Eric Holder, who portrayed a Texas photo ID law now being challenged as similar to poll taxes used in the Jim Crow era, primarily by Southern states, to block African Americans from voting. Holder pledged to oppose “political pretexts” which, he said, “disenfranchise” black voters.
The study finds that racial resentment trumps party affiliation and political attitudes. While they found Republicans and conservatives overwhelmingly support voter suppression (because that's what they do), they found that Democrats and liberals "with the highest 'racial resentment'" also express strong support for the laws. These laws disproportionately hit minorities.
1.2 million eligible black voters and 500,000 eligible Hispanic voters live more than 10 miles from their nearest ID-issuing office open more than two days a week. People of color are more likely to be disenfranchised by these laws since they are less likely to have photo ID than the general population.
That's the whole point.