Keir Starmer’s wife is Jewish so it is possible his political alignment has been due to his spouse.
https://x.com/bellawallerstei/status/1725902284935094774?s=46&t=QVo9I3_IH31_wLH46Z1mog
https://x.com/bellawallerstei/status/1725902284935094774?s=46&t=QVo9I3_IH31_wLH46Z1mog