sentences:  Although he missed out when the party won only four seats, Ariel entered the Knesset on 17 October 2001 as a replacement for the assassinated Rehavam Ze'evi.He was placed sixth on the alliance's list for the 2003 elections, and retained his seat when the party won seven mandates.Prior to the scheduled Israeli withdrawal from the Gaza Strip and the northern West Bank in August 2005, Ariel moved to Kfar Darom in solidarity, and he firmly opposed the plan.