Some 308,000 Virginia voters are also registered elsewhere, according to an analysis of 22 states’ election records.

The finding follows Watchdog.org’s report of 44,000 people who appear to be registered in both Virginia and Maryland.

The latest survey found the 308,000 double registrations by matching names, birth dates and the last four digits of Social Security numbers.

The Virginia Voters Alliance, which reported the results, identified “big gaps” in the voter-registration process.

Read more from Watchdog.org.