Leader of the Opposition Andrew Little visited the Pike River families late this morning at the picket line, just hours after Green Party MP Denise Roche.
Little's visit comes just three days after Winston Peters was there.
The families have been protesting the sealing of the mine, and pushing for safe re-entry of the drift.
"I was asked to come down and I am here to support and give my allegiance to the families," Little said.
Little has been involved with the families' fight for justice since day one when he was head of the miners' union, the EPMU.