Even though the Nebraska Director of Elections tried to find a sponsor in the legislature for a bill to make it easier for a party to remain on the ballot, no such bill has been introduced, and the deadline for new bills has passed.
This newspaper article explains that the Nebraska legislature has an unusually small number of bills this year. The explanation is that the many new legislators are reluctant to introduce bills. There are many new legislators in Nebraska this year, because legislative term limits finally took effect.
The bill that had been proposed to assist minor parties would have said that when a party meets the 5% vote test, it remains on the ballot for the next two elections, instead of just one election.