Kansas Secretary of State Kris Kobach says Nevada has joined a program in which states compare voter registration records annually, bringing the number participating to 25.

The Voter Registration Crosscheck Program is designed to identify people who are registered in two or more states and people who cast ballots in more than one state. Kansas, Iowa, Missouri and Nebraska launched it in 2005, and it’s been expanding since.

Kobach and Nevada Secretary of State Ross Miller jointly announced Nevada’s participation Thursday.

The four original states had about 9 million registration records. With Nevada, there will be more than 90 million voter registration records in the program’s database in 2014.