This proved that he was politically able, and in good standing to be a possibility for Lenin's replacement. He was a good orator, organised, and worked for the benefit of Russia. However, his downfall was that he was a heavy drinker.
Tomsky was an active member of trade unions, and had excellent organisational and action skills. He was also a very decisive member of the party, and was a genuine worker of the party leadership. Despite all of this, he was not in a good position to win the power struggle as he had not agreed with Lenin, pushing him to the outskirts of the party, and he was not an intellectual like many of the other members were.
Kamenev had many points in his favour. The main contributor was that he had been an active Bolshevik and a full time revolutionary since 1905, and had been the President of the Bolshevik conference in 1907; therefore he knew the details of the party's policies. In addition to this, Lenin regarded him as able and reliable, although in his Testament, Lenin had criticised him for his lack of enthusiasm for the Bolshevik seizure in October 1917. Other political advantages that Kamenev had were that he had been the Moscow party secretary, and the commissar of foreign trade. This meant that he had influence other the minorities, of which there were many throughout Russia. Kamenev's let downs were that he had been opposed to the April Thesis, he wanted a socialist coalition government, and he had had heated debates with Lenin. This last point led to him losing influence.
Bukharin was known as "the golden boy- of the party, and was a firm favourite with Lenin. He was good at organising and propaganda, and was also head of the newspaper "Pravda-. Additionally, he was a great orator, and a valuable theoretician for the party. It can be considered that the only reason he was not in a more prominent position to be Lenin's successor was because of his age- he was considered to be too young.