This new ad by the London Labour Party attacking Conservative London Mayoral candidate is aimed at journalists and Labour cognoscenti.
The median voter in London will not recognise Susan Hall, nor be aware that she’s a fan of Trump, Boris et al.
The Khan campaign’s hope is that this ad will get press coverage, and in the article it might explain to voters that Hall has some unfavourable associations.
The ad also has the added benefit of firing up the base who see it on social media.