TRENTON, N.J. — Fellow Republicans on Saturday debated the fallout over new allegations that Gov. Chris Christie made inaccurate statements about his knowledge of lane closures orchestrated by top aides as apparent political payback.

Some said the accusations could derail any hopes of Christie running for president in 2016 if he can’t shake the scandal soon, while others were quick to express faith in the governor while discrediting his accuser and questioning his motives.