The next paragraph of that article.
On the other hand, the Republican call for strict photo-ID laws to prevent fraud is a solution to a non-existent problem. News21, a Carnegie-Knight investigative reporting project, analyzed 2,068 alleged fraud cases in all 50 states since 2000 and found only 10 cases of voter impersonation -- about one for every 15 million prospective voters. But the analysis found 491 cases of alleged absentee ballot fraud and 400 cases of alleged registration fraud, none of which existing voter-ID laws would affect.
You're citing a piece, which says the voter ID laws are completely unnecessary but constitutional.
And their argument that this doesn't have a disenfranchising affect is - "well democratic turnout for the first black President was high in these two states, so -".