Conversation so far:
Where was Recep Tayyip Erdoğan elected to first?
The 2002 Turkish general election was the first election in which Recep Tayyip Erdoğan participated as a party leader.

Question: What party was he with?
Self-contained rewrite: What party was Recep Tayyip Erdoğan with for the 2002 Turkish general election?