Yes, a United States senator really did collude with the Russians to influence the outcome of a presidential election. His name was Ted Kennedy.
Picking his way through the Soviet archives that Boris Yeltsin had just thrown open, in 1991 Tim Sebastian, a reporter for the London Times came across an arresting memorandum. Composed in 1983 by Victor Chebrikov, the top man at the KGB, the memorandum was addressed to Yuri Andropov, the top man in the entire USSR. The subject: Sen. Edward Kennedy.
"On 9-10 May of this year," the May 14 memorandum explained, "Sen. Edward Kennedy’s close friend and trusted confidant [John] Tunney was in Moscow." (Tunney was Kennedy’s law school roommate and a former Democratic senator from California.) "The senator charged Tunney to convey the following message, through confidential contacts, to the General Secretary of the Central Committee of the Communist Party of the Soviet Union, Y. Andropov."
Kennedy’s message was simple. He proposed an unabashed quid pro quo. Kennedy would lend Andropov a hand in dealing with President Reagan. In return, the Soviet leader would lend the Democratic Party a hand in challenging Reagan in the 1984 presidential election. "The only real potential threats to Reagan are problems of war and peace and Soviet-American relations," the memorandum stated. "These issues, according to the senator, will without a doubt become the most important of the election campaign."
https://www.forbes.com/2009/08/27/ted-kennedy-soviet-union-ronald-reagan-opinions-columnists-peter-robinson.htmlIn 1992, Tim Sebastian published a story about the memorandum in the London Times. Here in the U.S., Sebastian’s story received no attention. In his 2006 book, The Crusader: Ronald Reagan and the Fall of Communism, historian Paul Kengor reprinted the memorandum in full. "The media," Kengor says, "ignored the revelation."
"The document," Kengor continues, "has stood the test of time. I scrutinized it more carefully than anything I’ve ever dealt with as a scholar. I showed the document to numerous authorities who deal with Soviet archival material. No one has debunked the memorandum or shown it to be a forgery. Kennedy’s office did not deny it."