New Jersey’s Provincial Congress first convened in May, but by now they’d gotten a bunch of stuff done. They’d already made arrangements to remove the Royal Governor from power, and resolved to do it like gentlemen (it didn’t work out that way, unfortunately).
At this point the colony had only one delegate to the Continental Congress: a couple had resigned, one never showed up, and that left exactly one man holding down the fort. So the Provincial Congress appointed new delegates, with a specific mission.