Tory Party membership were ever in danger of voting for someone who looks a bit foreign.
https://www.ft.com/content/3ccc8cbc-beb1-4809-9b97-f7a7dbce8608
Is Rishi Sunak’s looming defeat in the Conservative leadership election because he’s not white?
I think the answer to this is “well, it’s complicated”. On the one hand, well, just look at this Opinium poll of Conservative members from January:
As you can see, had the Conservative leadership election taken place in January 2022, Rishi Sunak would have won it and won it comfortably. Now, here is an Opinium poll for the Observer from this month:
The picture from January 2022 has almost exactly reversed: Rishi Sunak has gone from defeating Liz Truss by 28 points to losing by a near-identical margin. I don’t think we can easily claim that January’s polls were wrong but August’s are right, and it stretches credulity well past breaking point to believe that Conservative members only noticed that Sunak was British-Indian in February of this year.
Obviously you need to read the FT link to see the graphs which the article is referring to.