On 10 September 1987, after a lecture from hard-liner Yegor Ligachev at the Politburo for allowing two small unsanctioned demonstrations on Moscow streets, Yeltsin wrote a letter of resignation to Gorbachev who was holidaying on the Black Sea.[18] When Gorbachev received the letter he was stunned – nobody in Soviet history had voluntarily resigned from the ranks of the Politburo. Gorbachev phoned Yeltsin and asked him to reconsider. On 27 October 1987 at the plenary meeting of the Central Committee of the CPSU, Yeltsin, frustrated that Gorbachev had not addressed any of the issues outlined in his resignation letter asked to speak. He expressed his discontent with both the slow pace of reform in society, the servility shown to the General Secretary, and opposition to him from Ligachev making his position untenable, before requesting to resign from the Politburo, adding that the City Committee would decide whether he should resign from the post of First Secretary of the Moscow Communist Party.[19] This was sensational. Besides the fact that nobody had ever quit the Politburo, no one in the party had ever had the audacity to address a leader of the party in such a manner in front of the Central Committee since Leon Trotsky in the 1920s.[19] In his reply, Gorbachev accused Yeltsin of "political immaturity" and "absolute irresponsibility". Nobody in the Central Committee backed Yeltsin.
Within days, news of Yeltsin's actions leaked and rumours of his 'secret speech' at the Central Committee spread throughout Moscow. Soon fabricated samizdat versions began to circulate – this was the beginning of Yeltsin's rise as a rebel and growth in popularity as an anti-establishment figure.[20] Gorbachev called a meeting of the Moscow City Party Committee for the 11 November 1987 to launch another crushing attack on Yeltsin and confirm his dismissal. On 9 November, 1987, Yeltsin apparently tried to kill himself and was rushed to hospital bleeding profusely from self-inflicted cuts to his chest. Gorbachev ordered the injured Yeltsin from his hospital bed to the Moscow party plenum two days later where he was ritually denounced by the party faithful in what was reminiscent of a Stalinist show trial before he was fired from the post of First Secretary of the Moscow Communist Party. Yeltsin would never forgive Gorbachev for this 'immoral and inhuman' treatment.[21]
Yeltsin was demoted to the position of First Deputy Commissioner for the State Committee for Construction. At the next meeting of the Central Committee on 24 February, 1988, Yeltsin was removed from his position as a Candidate member the Politburo. He was perturbed and humiliated but began plotting his revenge.[22] His opportunity came with Gorbachev's establishment of the Congress of People's Deputies.[23] He recovered, and started intensively criticizing Gorbachev, highlighting the slow pace of reform in the Soviet Union as his major argument.
Yeltsin's criticism of the Politburo and Gorbachev led to a smear campaign against him, in which examples of Yeltsin's awkward behavior were used against him. An article published in Pravda described him as being drunk at a lecture during his visit to the United States, an allegation which appeared to be confirmed by a TV account of his speech. However, popular dissatisfaction with the regime was very strong, and these attempts to smear Yeltsin only added to his popularity. In another incident, Yeltsin fell from a bridge. Commenting on this event, Yeltsin hinted that he was helped to fall from the bridge by the enemies of perestroika, but his opponents suggested that he was simply drunk.
On 26 March 1989, Yeltsin was elected to the Congress of People's Deputies of the Soviet Union as the delegate from Moscow district with a hugely decisive 92% of the vote[6] and on 29 May 1989, was elected by the Congress of People's Deputies to a seat on the Supreme Soviet of the Soviet Union.[6] On 19 July, 1989, Yeltsin announced the formation of the radical pro-reform faction in the Congress of People's Deputies: the Inter-Regional Group of Deputies, and on 29 July 1989 was elected one of the five co-Chairman of the Inter-Regional Group