The committee's investigation prompted the N.C. State Board of Elections to look into the issue.
"We will be putting investigators on these people," said Don Wright, general counsel for the SBOE.
Double voting, a felony in the United States, occurs when people move out of one state and into another but still vote in both.
"Sometimes people move to a new location and don't bother to re-register," Wright said. "Other times they will re-register but their new location won't send us cancelation cards alerting us."
State election officials detect double voting using a cross-checking computer system that compares the birth dates and the first, middle and last names of all voters to check for similarities.
But people's names that appear in cross-check might not have double voted, Wright said.
"With 4 million active voters, chances are good that people might have the same name and birthday," he said.
Though double voting is a federal felony, Wright said election officials often don't prosecute because investigations often reveal that voters simply have made a mistake. Officials are hesitant to prosecute if money or malicious intent are not involved, he said.
"Generally, we don't find people with criminal attitudes about voting," Wright said. "I'm not trying to downgrade double voting, but it's not like every voter is doing it. However, we are committed to investigating."
