The whole point of the poll taxes that were made a condition of voting in many Southern states was precisely to disenfranchise Native Americans, African-Americans and recent immigrants. The purpose of voter ID laws is slightly different as they are aimed more at a political party than an ethnicity, but it is entirely justifiable to call a voter ID law a latter-day poll tax as the effect of such laws will be to reduce votes for Democrats.
Sure, one can find a rare case of someone voting in two jurisdictions, but nothing extensive or systematic [in the area of voter fraud] has been unearthed or documented.
The piece also examines the practical difficulties of successfully affecting elections through voter fraud and concludes that such a method would prove extremely (to use the computer geek term) kludgy - "a clumsy or inelegant solution to a problem" and easy to detect and prosecute. Deborah Leavy of the Inky's sister paper, the Daily News makes the further point that a successfully prosecuted case of voter fraud could mean that "For a non-citizen to vote would involve four counts of federal crimes risking 20 years in prison, $40,000 in fines and deportation, all for one measly vote." Seems like an awfully big risk for the voter just to get in an illegal vote.
Nevertheless, the Inky has run two recent letters complaining that voter fraud is a real problem, indicating that they're getting lots and lots of letters on the issue. The above-cited editorial in the Daily News indicates that the voter fraud issue is riding a wave of anti-immigrant hysteria and that right-wing politicians are cheerfully exploiting the issue to help their own political careers.
The right-wing site World Net Daily makes the charge that former President Bill Clinton is sending out a package to unregistered voters that contains the following instructions:
I'd need to see more context and detail to determine whether this package would actually be accepted by polling places as legitimate registrations, as WND charges. Seems to me that fraudulent voters would be taking a big risk (Yes, if Hillary Clinton wins the election, she could make the legal problem for the fraudulent voter go away, but with a $40,000 fine and jail time in the balance, that's a big "if") and that such a polling place would be derelict to accept such a "Voter Identification Card" as legal proof of anything. But it shows that the right wing takes the issue of voter fraud quite seriously.