Me. Rev. Stat. tit. 14, § 1354

In the trial of all civil suits in the Superior Court of this State, if a number of jurors equal to at least 2/3 of the total number of jurors serving on a jury agree on a verdict or finding, they shall return it into court as the verdict or finding of that jury and the trial judge shall so instruct the jury; provided, however, that the parties to a civil suit may stipulate that a verdict or finding of a stated majority of the jurors must be taken as the verdict or finding of the jury.