Use of the Commons for Opposition

I haven't decided who to vote for in the forthcoming Labour Leadership contest, but I must say I am impressed by how Lisa Nandy is using the House of Commons to oppose Johnson.  She obviously used her speech for the Speaker as a kind of pitch, but she has now added a detailed critique Johnson's withdrawal agreement.  I know some people are skeptical of how effective Parliamentary opposition can be given that Johnson can now simply outvote everyone, but this seems to me a model use of one of the platforms and Opposition Leader can actually use.

Of course, other potential contenders such as Yvette Cooper or Keir Starmer have also been effective.