When a party either nominal or real or the husband or wife of a party is used as a witness by an adverse party, testimony may be introduced by such adverse party to contradict or discredit him. <div
Me. Rev. Stat. tit. 16, § 154
Impeaching of own witness
Official source: Maine Legislature. Reproduced from public-domain Maine statutes; confirm against the official source for the current text. Not legal advice.