(AP) — Lawmakers have begun debate on a bill that would end Nebraska’s practice of splitting its electoral votes in presidential elections.

The bill presented Tuesday by Republican state Sen. Charlie Janssen would have Nebraska adopt the winner-take-all system when awarding its electoral votes.

Nebraska split its electoral votes for the first time in 2008, when Barack Obama captured one from Nebraska’s 2nd District on his way to winning the presidency. The bill advanced out of committee last year on a 5-3, party-line vote.

Nebraska has five electoral votes. Three are split based on who won in each of Nebraska’s congressional districts.

Sen. Ernie Chambers calls the bill “strictly and purely partisan,” and promises an eight-hour filibuster.

Lawmakers adjourned for the day without reaching a vote.