Cho, who competed against Bristol during the recently wrapped 11th season of the ABC reality show, made the claims on her blog, noting that she was repeating claims from people who "should seriously know the dirt."
Bristol aside, has Dancing Jumped the Shark?
"Sarah supposedly blames Bristol harshly and openly (in the circles that I heard it from) for not winning the election, and so she told Bristol she 'owed' it to her to do DWTS so that 'America would fall in love with her again,'" Cho wrote.
Cho also refuted claims that she didn't get along with Bristol. "Everyone was trying to pit me against Bristol, but the truth is, we got along well," Cho wrote. "She never asked me to babysit Tripp or anything like that, but I consider her a friend. ... Although I don't agree with the family's politics at all, I really like Bristol as a person. She's warm and incredibly supportive, and I think that she looks beautiful out on the dance floor."
Cho was eliminated in the third week of the competition. Palin made it to the show's finale before finishing in third place.
An email to Sarah Palin's lawyer was not immediately returned.
What do you think of Cho's claims?