Parliamentary campaigns in Westminster gain durability when they stop being attributable to one party's ideology. The controlai.com campaign has now cleared that threshold [1]. Baroness Bloomfield's endorsement is not symbolic — it means a future Labour government cannot dismiss binding superintelligence regulation as a Conservative concern, and a future Conservative government cannot dismiss it as a Labour one. The campaign has made the political cost of inaction bipartisan. That structural shift, not the headline count, is what the AI policy community in London is watching.