LINCOLN, Neb. (AP) — Nebraska lawmakers are wrangling over a measure that would require voters to show a government-issued identification card or registration papers before they could vote.

Fremont Sen. Charlie Janssen told lawmakers Tuesday that his bill seeks to fight the threat of voter fraud, a problem that critics say doesn’t exist.

Janssen says his proposal would reduce fraud and is not restrictive, because registered voters without IDs would still be allowed to vote provisionally. Counties would then verify their identities for their ballots to count.

Critics say the law disproportionately affects poor and young voters. The group Nebraskans for Civic Reform says between 50,000 and 100,000 Nebraskans do not have identification that would qualify as valid.

UPDATE: Lawmakers voted on the measure Wednesday. Lawmakers who backed the measure fell three votes short Wednesday of the support they needed to overcome a legislative filibuster. The failure to end debate essentially squashes the bill for this legislative session. The bill’s sponsor, Fremont Sen. Charlie Janssen, says he will likely bring it back next year.