Judicial Watch filed a lawsuit against the state of Kentucky last week, accusing officials of keeping falsified voter registration lists after learning that 48 counties in the state have more registered voters than citizens over the age of 18.

“Kentucky has perhaps the dirtiest election rolls in the country,” Judicial Watch President Tom Fitton said Wednesday. “Federal law requires states to take reasonable steps to clean up their voting rolls—and clearly Kentucky hasn’t done that.”

Judicial Watch filed the federal lawsuit against Kentucky’s Democratic Secretary of State Alison Lundergan Grimes in U.S. District Court for the Eastern District of Kentucky on Wednesday.

In his complaint, Fitton pointed out that Kentucky citizens must have “more confidence” that elections in the state won’t be “subject to fraud.”

Judicial Watch gets its evidence from having analyzed registration data in a 2017 Election Assistance Commission Report. When compared to “the most recent census data”, the group found Kentucky’s rates “sky high” and in violation of the National Voter Registration Act. In letters included in the filing, Judicial Watch cites U.S. Census Bureau American Community Surveys, an annual mandatory survey sent to a small percentage of the population on a rotating basis.

According to a letter in the filing, the lawsuit asks the court to require Kentucky officials implement a program to remove “ineligible registrants” and turn over numerous related documents, including the voter registration database from the counties with discrepancies, including names, birth dates, home addresses, voter activity and whether the voter is considered “active” or “inactive.”

According to a report in Fox News, Kentucky is required by law to disclose to the federal Election Assistance Commission the inactive registrations it carries on its voter rolls.

Kentucky also is required by the National Voter Registration Act to make registration-related records publicly available by request — but the group claims the state did not make records available to them.

“Dirty voting rolls can mean dirty elections,” Fitton noted.

A spokesman for the Kentucky secretary of state told Fox News the lawsuit is “without merit.”

“We are confident the facts will prove Kentucky is following the law and doing its due diligence to protect voters’ rights and franchise,” said Bradford Queen on Wednesday.

Queen claimed that under Grimes’ leadership, Kentucky “has and will continue to” maintain the state’s voter rolls in accordance with all federal and state statutes, ​“including the National Voter Registration Act and the Help America Vote Act.”

Queen’s response was a direct attack on Judicial Watch. “Judicial Watch is a right-wing organization masquerading as a citizen advocacy group, and a majority of its lawsuits have been dismissed,” he shot back, adding, “In reality, Judicial Watch wants to make it harder for people to vote, and the Commonwealth and its State Board of Elections won’t bow to their efforts.”

Judicial Watch is also now suing the state of Maryland and Montgomery County over their alleged failure to release voter registration documents.

Judicial Watch sent notice-of-violation letters to 11 states this year threatening to sue over “excessive” voter roles.