John Fund explains at National Review Online why voter fraud remains a threat, regardless of recent rulings from federal courts.

Three federal courts have thrown out voter-ID laws in North Carolina, Texas, and Wisconsin in recent days. Left-wing judges accepted spurious evidence that such laws were racially discriminatory, and they also insisted there is little voter fraud to worry about. Last April, United States District Judge Lynn Adelman of Wisconsin claimed that “virtually no voter impersonation occurs” in Wisconsin and that “no evidence suggests that voter-impersonation fraud will become a problem at any time in the foreseeable future.”

Despite such sweeping statements, polls show that the general public is worried about fraud and bureaucratic incompetence in voting. According to a Pew Research Center survey, only 31 percent of Americans were confident that “the votes across the country were accurately counted” in the 2012 election. Small wonder. A separate Pew survey in 2012 found that one out of eight voter registrations is inaccurate, out-of-date, or a duplicate. Some 2.8 million people are registered in two or more states, and 1.8 million registered voters are dead.

Guerilla filmmaker James O’Keefe is famous for having busted institutions ranging from the fraudulent voter-registration group ACORN to NPR. His Project Veritas team has also piled up an impressive array of videos documenting that the Pew survey numbers on voter registration could easily be translated into fraudulent votes with very little chance of detection. In New Hampshire, he found it was easy to vote using the name of a dead person. In North Carolina, political operatives encouraged his undercover associates to vote even if they were non-citizens. …

… Last week in Michigan, O’Keefe struck again, testing the state’s voter-ID law, which allows non-ID holders to vote if they merely fill out an affidavit claiming they are who they say they are. Such affidavits are almost never checked. Using this ruse, O’Keefe told different poll workers he was Detroit mayor Mike Duggan, Wayne State University Law School dean Jocelyn Benson, and columnist Nancy Kaffer of the Detroit Free Press — all whom strongly oppose voter-ID laws. In each case, poll workers offered him primary ballots for the person he was claiming to be. He was also offered the ballot of legendary Michigan rapper Eminem, whose real name is Marshall Bruce Mathers III.