Sponsors of the gay marriage bill hope they can win new converts in the next few months, enough to override Christie's expected veto. Some even hope the governor will change his mind. That would be the ideal outcome.
Remember, too, that supporters of gay marriage have filed suit, so the state Supreme Court could save the day by endorsing full marriage equality, as courts have in several other states.
But there is a third option -- to amend the state constitution, bypassing the governor entirely, as suggested here by Josh Zeitz, who served as a senior aide to former Gov. Jon Corzine.