Newly available data is casting doubt on the integrity of the presidential election in New Hampshire in 2016, which Hillary Clinton won by just over 2,700 votes.

Over 6,000 voters in New Hampshire had used same-day voter registration procedures to register and vote simultaneously for president. The current New Hampshire speaker of the House, Shawn Jasper, sought and obtained data about what happened to these 6,000 “new” New Hampshire voters who showed up on Election Day.

It seems the overwhelming majority of them can no longer be found in New Hampshire.

Of those 6,000, only 1,014 have ever obtained New Hampshire driver’s licenses. Of the 5,526 voters who never obtained a New Hampshire driver’s license, a mere three percent have registered a vehicle in New Hampshire.

The Public Interest Legal Foundation received information that 70 percent of the same-day registrants used out-of-state photo ID to vote in the 2016 presidential election in New Hampshire and to utilize same-day registration.

Gov. Maggie Hassan, a Democrat, also defeated incumbent U.S. Sen. Kelly Ayotte by only 1,017 votes.

These new data illustrate the problem with same-day registration laws: they prevent the ability to verify residency prior to the election — and in a close election, that can make a difference.

As John Fund and Hans von Spakovsky pointed out in their book Who’s Counting, same-day registration fraud won Al Franken his Senate seat, and that extra Democratic seat then gave the country Obamacare.