Illinois Gov. Bruce Rauner on Tuesday vetoed legislation that would have gotten the state out of the controversial Crosscheck voter identification program.

Illinois election officials have decided the state will remain in Crosscheck, a multi-state voter registration database that critics claim is inaccurate and could lead to security breaches.

Federal election law requires states to keep accurate and up-to-date voter registration rolls. But one tool to help them do so is at the center of a partisan debate. In Illinois, many Democrats are calling on the state Board of Elections to stop participation in the Interstate Voter Registration Crosscheck Program, or Crosscheck, for short.