(CNN) - Connecticut Republican Senate candidate Linda McMahon is ignoring a request from Ted Kennedy, Jr., the nephew of President John F. Kennedy and son of the late Senator, to remove an ad in which she uses a clip from one of the late president's speeches.
The online ad, entitled "A Good Idea– Then and Now," features President Kennedy in 1963 speaking about tax cuts as a way to prevent a recession.
In a back and forth exchange of letters, Kennedy, Jr. claims a distortion of the late President's policies while McMahon maintains that her interpretation is correct.
In his letter, Kennedy Jr. - who supports McMahon's opponent, Connecticut Attorney General Richard Blumenthal– asks McMahon to remove the ad and writes "Your ad is dishonest because it distorts the legacy of President Kennedy in order to mislead voters into thinking that President Kennedy would support your position on tax policy."
"I hope that you will offer a retraction statement that clarifies the distinction between my uncle's policies and your own." Kennedy writes. "You attempt to conflate your economic policies with those of President Kennedy's in order to capitalize on his legacy."
In her response, McMahon neither mentions the ad directly nor acknowledges Kennedy's request to remove it.
Instead she writes, "While I appreciate your interest in my campaign, I must disagree with your characterization of the tax situation."
"Your uncle supported tax cuts for those making nearly six times more than what today's Democratic Party, as well as your letter, labels as 'the wealthy.'"
"I respectfully disagree that your uncle would would support raising taxes in this economy."
A spokesman for McMahon, Shawn McCoy, told CNN on Friday that the decision to expand the ad beyond the web "hasn't been made yet, but we are considering putting it on broadcast."
Connecticut Democratic Senate candidate Richard Blumenthal's office would not comment on the exchange.
Ted Kennedy Jr. has not responded to CNN's request for comment.