Conversation so far:
what happened in the general elections for Recep Tayyip Erdoğan?
The elections of 2002 were the first elections in which Recep Tayyip Erdoğan participated as a party leader.
what did Recep Tayyip Erdoğan do as party leader?
During the 2003 rescheduled election, Party leader Recep Tayyip Erdoğan was able to run for parliament due to a legal change made possible by the opposition Republican People's Party.
what did that party do?
The Justice and Development Party listed Recep Tayyip Erdoğan as a candidate for the 2003 rescheduled election, which he won, becoming Prime Minister after Abdullah Gül handed over the post.

Question: did they help make any changes?
Self-contained rewrite: did Prime Minister Recep Tayyip Erdoğan and the Justice and Development Party help make any changes?