YES if all 5 of Nebraska’s electors for president are awarded on a statewide vote basis instead of the existing hybrid system in 2024.
Maine has a Democratic majority in their state and could react with a corresponding switch to favor Harris.
It may already be too late for Maine to change their laws before the election, depending on whether the deadline for the law to take effect is when voters cast their ballots vs when the electoral college meets to cast their ballots.
There seems to be more news on this:
Nebraska Republicans float special session to revive Trump-backed election rule change
https://www.politico.com/news/2024/04/10/nebraska-gop-trump-election-rules-00151499
Nebraska lawmakers reject Trump-backed winner-take-all election system
Inside the battle over Nebraska's electoral college votes
https://www.semafor.com/article/04/05/2024/inside-the-battle-over-nebraskas-electoral-college-votes
[McDonnell’s] opposition combined with the political realities of the 49-member Legislature — made up of 32 other Republicans, 15 registered Democrats and one nonpartisan progressive — suggests the legislation still does not have enough to support to overcome the filibuster it will inevitably face, one that looms with six days left in this year’s legislative session.
Legislative session is almost over.