LINCOLN, Neb. (AP) — Groups that want to legalize casino gambling in Nebraska are reviving a petition drive that seeks to put the issue before voters in the 2020 general election.

The campaign committee Keep the Money in Nebraska is preparing another constitutional amendment that would allow gambling at state-licensed horse racing tracks. The effort was announced Thursday by Ho-Chunk, Inc., the economic development arm of the Winnebago Tribe of Nebraska.

A similar effort failed in 2016 when the secretary of state’s office announced that supporters didn’t submit enough verified signatures to place the issue on the ballot. Organizers turned in nearly 120,000 signatures, which would have been enough, but nearly 42,000 were rejected as invalid for various reasons.

Organizers say they’re using a new signature collection group for this attempt.