JEFFERSON CITY, Mo. (AP) – A proposal to require Missouri voters to show photo ID at polling places is stalled in the state Senate.

Democrats filibustered the bill for about six hours Wednesday night. The Senate paused its business shortly after midnight for lawmakers to meet off the floor, and the chamber adjourned early Thursday around 2 a.m. without resuming debate.

The bill first came to the Senate floor in early April. Republican Sen. Will Kraus said the majority party is open to using a procedural move to cut off debate in order to pass it before the session ends May 13.

Invoking that move last year caused Senate Democrats to halt virtually all legislation during the last week of session.

Democrats say requiring a photo ID to vote would disenfranchise voters. Republicans say it would reduce fraud.