Claire MCCaskill was so turned off by the scene, in which actress Sophie Turner's character Sansa Stark was assaulted by her husband Ramsay Bolton on their wedding night, she has gone public with her pledge never to watch the fantasy series again.

In a tweet on Tuesday (19May15), the Senator wrote, "Ok, I'm done Game Of Thrones. Water Garden, stupid. Gratuitous rape scene disgusting and unacceptable. It was a rocky ride that just ended."

The sex scene did not feature in Game of Thrones author George R.R. Martin's books and after the episode aired on Sunday, he wrote a blog post in response to angry viewers, supporting the series producers and executives at HBO for taking a big risk.

But he added, "David (Benioff) and Dan (Weiss) and Bryan (Cogman) and HBO are trying to make the best television series that they can, and over here I am trying to write the best novels that I can. And yes, more and more, they differ."

Meanwhile, Turner has confessed she "loved" the twist in the story, telling Entertainment Weekly, "It was all so messed up. It's also so daunting for me to do it. I've been making (Cogman) feel so bad for writing that scene: 'I can't believe you're doing this to me!' But I secretly loved it."