Opponents of Alaska's new petroleum tax system are vowing to track its future performance, even if they lose at the ballot box.

Alaska held its state primary Tuesday and results so far of an attempted repeal of the tax system show the measure failing by more than 6,000 votes. Absentee votes and a handful of precincts remain to be counted and the election is too close to call.

Ballot Measure No. 1 proposed a repeal of Gov. Sean Parnell's "More Alaska Production Act." Lawmakers approved the tax system last year.

Proponents say the law will mean more jobs for Alaskans and more oil production.

State Sen. Bill Wielechowski says opponents are collecting promises made by supporters and will closely monitor them to see if they actually occur.