The state's top elections official announced Tuesday that Pennsylvania will join 23 other states in a program that seeks to identify voters registered in more than one state.
Secretary of the Commonwealth Carol Aichele said in a statement that participation in the Interstate Voter Registration Crosscheck Program will protect the integrity of votes.
The program uses the names, birth dates and Social Security numbers of registered voters to identify potential duplicates, said Ron Ruman, a spokesman for the Department of State. Pennsylvania uses a similar comparison to find voters who have moved between counties, he said.
"It's the same system we're using within the state now," he said. "It's working well here."
The state of Kansas operates the interstate program, according to the department. Pennsylvania will begin providing voter registration data in January 2014.
If a suspected duplicate is found, the voter will be contacted. If the voter can't be reached, his name will remain on the rolls for two additional federal elections, Mr. Ruman said.
The other states in the program are Alaska, Arizona, Arkansas, Colorado, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Michigan, Mississippi, Missouri, Nebraska, Ohio, Oklahoma, Oregon, South Carolina, South Dakota, Tennessee and Virginia.