In total, 17 Labour MPs have now signed a motion put forward by Neil Duncan-Jordan calling on the Government to delay implementing the cut.
Unite union general secretary Sharon Graham has accused Labour of deciding to "pick the pocket of pensioners" and called instead for a wealth tax to raise funds.
Having seen the hostility generated by removing Winter Fuel Payments, it seems to me exceptionally unlikely that the Chancellor would now double down by attacking the state pension itself.
This does not, of course, mean that pensioners will necessarily escape some of the further tough medicine we have been promised.
Wealthier pensioners could well see a tougher regime for things like Capital Gains Tax and/or Inheritance Tax. But my judgment is that raiding the state pension would be seen as a step too far.