DMcG:
But if Nigel and Iains are typical, revoke could give a much stronger showing than that if it survived the first round.

I put 'Revoke' in second place on the basis that Mrs May's 'deal' leaves us worse off than we were before, and the Labour Party deal has never been spelt out, but is not likely to be any improvement over Mrs may's deal.

If we can't get out with either a good deal, or with WTO terms, then at least revoking Article 50 will leave us in the position we were in prior to June 2016. We would have the opportunity to issue Article 50 again at a later date, after all the ramifications had been fully discussed, and an intended way forward in place.

As for a second referendum (which might become necessary if Article 50 was revoked). You didn't ask about it so I didn't respond (as you clearly stated).

If Jim wants to increase the scope of the question maybe he would like to ask his own, or at least give his response to your original one.