SPRINGFIELD, Ill. (AP) – The Senate has failed to overturn a veto on legislation that would withdraw Illinois from contentious multistate voter registration system.

The vote to override Gov. Bruce Rauner’s veto was 35-21 Wednesday. An override requires 36 votes.

Chicago Democratic Sen. Kwame Raoul’s measure would remove Illinois from the Interstate Voter Registration Crosscheck Program run through the Kansas secretary of state’s office.

It’s intended to flag duplicate voter registrations across state lines. Critics say the program is inaccurate and vulnerable to hackers.

Rauner’s veto message said the battle against vote fraud is fought by cross-referencing voter information from several states.

The bill is SB2273 .