Columbus, Oct. 22 -- US Vice President JD Vance has defended Vivek Ramaswamy over a controversial campaign advertisement targeting Democratic Ohio gubernatorial candidate Amy Acton, telling fellow Republicans to "stop whining" as criticism of the advert spreads across party lines.

Vance's response reflects his reluctance to abandon political allies under pressure, an approach that mirrors President Donald Trump's confrontational style as the vice-president prepares for a potential presidential run in 2028.

The advert, produced by Ramaswamy's campaign and backed by a reported $4 million statewide rollout, features Acton's estranged mother, Donna Arthur, accusing her daughter of lying about her childhood and urging voters not to elect her g...