Secretary of State Mike Mauro announced last Friday that a record 1,546,453 Iowans voted in the general election, including 47,553 who registered to vote on election day. In the days before Iowa allowed same-day voter registration, many people did not vote because by the time they became interested in a political campaign, the deadline to register had passed.

Republicans across the country throw around allegations about voter fraud, but states that have had same-day registration for a long time have not experienced this problem.

Take Minnesota, for instance. About one one-hundredth of a percent of the vote separates Al Franken and Norm Coleman in the U.S. Senate race. And yet:

[I]t’s worth noting that neither the Al Franken nor Norm Coleman camps has accused election officials of allowing significant numbers of ineligible people to vote. The two campaigns’ close scrutiny of events on Nov. 4 apparently has found nothing notably defective in either the voter registration or sign-in that occurred at the polls.

That’s the way it has been in every election since Minnesota began allowing voters to register at the polls in 1973. Ramsey County elections manager Joe Mansky said that, in his 24 years as a state and county elections administrator, the number of cases of orchestrated group efforts to subvert the law by registering improperly or voting multiple times has been “exactly zero.”

“There has been the occasional individual” who attempted to vote when or where he or she was not eligible. “But we have their driver’s license or their Social Security numbers,” or other means of detecting inaccurate registrations. “We find them and we prosecute them,” he said.

Only nine states allow voters to register on election day. I’d like to see same-day voter registration implemented across the country.