section_path: Early political career
section_name: Early political career
paragraph_text: Early political career
  
  On 23 August 2005, Lee joined the then-ruling Uri Party, a predecessor of the Democratic Party of Korea, and declared his candidacy for mayor of Seongnam. He ran as a candidate in the local elections in 2006, but was defeated by 23.75% of the vote due to poor public opinion about the Uri Party and Roh administration at the time.
  
  In the 2007 presidential election, Lee served as the senior deputy chief of the Office of the Presidential Candidate Chung Dong-young of the Grand Unified Democratic New Party. In the 2008 general election, he applied for a nomination in the constituency of Seongnam Jungwon A, but was defeated by Cho Sung-jun in the primary election, and was nominated in the Seongnam Bundang A constituency. However, Lee suffered from another defeat with 33% of the votes under difficult circumstances, as the constituency was a traditional stronghold of an opposing party who had just won the Presidential election under Lee Myung-bak.
  
  After the 2008 election, Lee served as the Democratic Party's deputy spokesperson at the request of the Democratic Party's leader Chung Sye-kyun.