A Nebraska Republican state lawmaker said Monday that he remains opposed to switching how the state allocates its electoral votes — a blow to former President Donald Trump and his allies, who are seeking the change in a bid for an extra electoral vote this fall.

Mike McDonnell, a state senator, said he would not support an effort to change the state’s electoral system to winner take all, an outcome that could have cost Kamala Harris an electoral vote.

A key state lawmaker announced Monday he doesn’t support changing Nebraska to a winner-take-all system, a move that could benefit former president Donald Trump.

A pressure campaign from Donald Trump and Republican allies to change Nebraska election law was dealt a significant setback on Monday as a pivotal Omaha state senator said he would not support a last-ditch effort to overturn a 30-year law that awards electoral votes by congressional district rather than statewide winner-take-all.

Republican lawmakers in Nebraska didn’t have the votes needed to change the law that could help Trump win the election.

Nebraska is one of two states that award some of its electoral votes by congressional district. A vote from the Omaha area is part of Harris’s easiest path to victory.

Donald Trump believes he will win four electoral votes from Nebraska, but it’s the fifth one that he is increasingly fretting about – leading the former president and his Republican allies to mount a last-ditch effort to try and change state election law only weeks before ballots are cast.

Former President Donald Trump is renewing efforts to change Nebraska's electoral vote allocation system to snag one of the state's electoral votes.

Both Vice President Kamala Harris and former President Donald Trump are calculating which states they need to win in order to become the next president. In one formulation, Harris wins only if she picks up one Electoral College vote in Nebraska.