 Significant at the 6th Congress was the generational shift within the WPK , with Kim Il @-@ sung planning to formalize the position of Kim Jong @-@ il . 248 members were elected to the 6th Central Committee : 145 full members and 103 candidate members . This was an increase of 76 members from the 5th Central Committee , which had 172 members . The expansion of the Central Committee is a sign of an expanding party , since one Central Committee member represents 10 @,@ 000 party members . Of the 248 members , " 139 ( 60 full members and 79 candidate members ) " were new to the Central Committee . However , compared to previous Central Committees the replacement rate was relatively low ( 41 @.@ 4 % , compared with 72 @.@ 2 % at the 5th Congress ) . Only two members have sat on the Central Committee since the 1st Central Committee : Kim il @-@ sung and Kim Il . The cause of the high Central Committee replacement rate had been intra @-@ party conflict , and the Yanan , South Korean , domestic and Soviet @-@ Korean factions ( as well as ideological opponents of hereditary succession ) had been purged from the Central Committee at previous congresses . Amendments to Party rules changed the name of the Political Committee back to its original name ( the Politburo ) , and created a Presidium within the Politburo to further centralize the power of the ruling elite . 
