Gov. Jon Corzine said yesterday he'll probably sign a bill that outlaws holding more than one elected office, even though the latest measure won't apply to current legislators.

During a wide-ranging news conference at the Statehouse, Corzine also said he would fight in court to keep private all e-mail exchanges between he and union leader Carla Katz, despite an ethics panel report that acknowledges the exchanges discussed state business and not just personal matters.

Corzine had threatened to withhold his signature from the state budget, due June 30, if lawmakers did not pass a ban on dual office-holding, a widely accepted practice in New Jersey for decades that is illegal in most other states because of the conflict it poses for politicians representing different constituencies.