Complex sentence: In 2002 Erkindik left the Congress and joined the People's Movement of Kyrgyzstan while in 2004 the Ar-Namys party left and joined the For Fair Elections electoral alliance.
Split into simpler sentences: In 2002 Erkindik left the Congress and joined the People's Movement of Kyrgyzstan. While in 2004 the Ar-Namys party left to joined the For Fair Elections electoral alliance.