It all started when Cindy McCain said she was an only child. Then her estranged half sister hit out saying how angry she was with Mrs. John McCain for denying her existence.
And now, Kathleen Hensley Portalski has said she won't be voting for her brother-in-law in the November election.
"I'm not voting for McCain," she tells Us. "I have a different political standpoint.
Portalski, 65, and the potential first lady, 54, have the same father: Jim Hensley, the founder of the beer distributor Hensley and Co. that Cindy McCain now chairs.